Home / 9,720.57-13,411.04-5,470.77

Finding the Fourth Proportional to 9,720.57, 13,411.04 and 5,470.77

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Solution

The fourth proportional to 9,720.57, 13,411.04 and 5,470.77 is: 7,547.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,720.57 : 13,411.04 = 5,470.77 : x
  2. Step 2: Convert to fraction form
    9,720.57/13,411.04 = 5,470.77/x
  3. Step 3: Cross multiply
    9,720.57x = 13,411.04 × 5,470.77
  4. Step 4: Simplify right side
    9,720.57x = 73,368,687.95
  5. Step 5: Solve for x
    x = 73,368,687.95/9,720.57
  6. Step 6: Final answer
    x = 7,547.78

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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.