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Finding the Fourth Proportional to 7,224.79, 9,970.09 and 4,038.13

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Solution

The fourth proportional to 7,224.79, 9,970.09 and 4,038.13 is: 5,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,224.79 : 9,970.09 = 4,038.13 : x
  2. Step 2: Convert to fraction form
    7,224.79/9,970.09 = 4,038.13/x
  3. Step 3: Cross multiply
    7,224.79x = 9,970.09 × 4,038.13
  4. Step 4: Simplify right side
    7,224.79x = 40,260,519.53
  5. Step 5: Solve for x
    x = 40,260,519.53/7,224.79
  6. Step 6: Final answer
    x = 5,572.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.