Home / 8,785.24-13,130.38-8,084.72

Finding the Fourth Proportional to 8,785.24, 13,130.38 and 8,084.72

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Solution

The fourth proportional to 8,785.24, 13,130.38 and 8,084.72 is: 12,083.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.24 : 13,130.38 = 8,084.72 : x
  2. Step 2: Convert to fraction form
    8,785.24/13,130.38 = 8,084.72/x
  3. Step 3: Cross multiply
    8,785.24x = 13,130.38 × 8,084.72
  4. Step 4: Simplify right side
    8,785.24x = 106,155,445.79
  5. Step 5: Solve for x
    x = 106,155,445.79/8,785.24
  6. Step 6: Final answer
    x = 12,083.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.