Home / 8,881.12-13,317.81-4,720.13

Finding the Fourth Proportional to 8,881.12, 13,317.81 and 4,720.13

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Solution

The fourth proportional to 8,881.12, 13,317.81 and 4,720.13 is: 7,078.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.12 : 13,317.81 = 4,720.13 : x
  2. Step 2: Convert to fraction form
    8,881.12/13,317.81 = 4,720.13/x
  3. Step 3: Cross multiply
    8,881.12x = 13,317.81 × 4,720.13
  4. Step 4: Simplify right side
    8,881.12x = 62,861,760.17
  5. Step 5: Solve for x
    x = 62,861,760.17/8,881.12
  6. Step 6: Final answer
    x = 7,078.13

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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.