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Finding the Fourth Proportional to 6,159.40, 9,240.56 and 1,999.40

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Solution

The fourth proportional to 6,159.40, 9,240.56 and 1,999.40 is: 2,999.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,159.40 : 9,240.56 = 1,999.40 : x
  2. Step 2: Convert to fraction form
    6,159.40/9,240.56 = 1,999.40/x
  3. Step 3: Cross multiply
    6,159.40x = 9,240.56 × 1,999.40
  4. Step 4: Simplify right side
    6,159.40x = 18,475,570.67
  5. Step 5: Solve for x
    x = 18,475,570.67/6,159.40
  6. Step 6: Final answer
    x = 2,999.57

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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.