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Finding the Fourth Proportional to 5,672.79, 8,509.19 and 1,777.50

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Solution

The fourth proportional to 5,672.79, 8,509.19 and 1,777.50 is: 2,666.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,672.79 : 8,509.19 = 1,777.50 : x
  2. Step 2: Convert to fraction form
    5,672.79/8,509.19 = 1,777.50/x
  3. Step 3: Cross multiply
    5,672.79x = 8,509.19 × 1,777.50
  4. Step 4: Simplify right side
    5,672.79x = 15,125,085.23
  5. Step 5: Solve for x
    x = 15,125,085.23/5,672.79
  6. Step 6: Final answer
    x = 2,666.25

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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.