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Finding the Fourth Proportional to 6,145.79, 9,218.67 and 1,528.79

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Solution

The fourth proportional to 6,145.79, 9,218.67 and 1,528.79 is: 2,293.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145.79 : 9,218.67 = 1,528.79 : x
  2. Step 2: Convert to fraction form
    6,145.79/9,218.67 = 1,528.79/x
  3. Step 3: Cross multiply
    6,145.79x = 9,218.67 × 1,528.79
  4. Step 4: Simplify right side
    6,145.79x = 14,093,364.42
  5. Step 5: Solve for x
    x = 14,093,364.42/6,145.79
  6. Step 6: Final answer
    x = 2,293.18

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.