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Finding the Fourth Proportional to 8,785.50, 12,125.08 and 5,807.54

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Solution

The fourth proportional to 8,785.50, 12,125.08 and 5,807.54 is: 8,015.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.50 : 12,125.08 = 5,807.54 : x
  2. Step 2: Convert to fraction form
    8,785.50/12,125.08 = 5,807.54/x
  3. Step 3: Cross multiply
    8,785.50x = 12,125.08 × 5,807.54
  4. Step 4: Simplify right side
    8,785.50x = 70,416,887.10
  5. Step 5: Solve for x
    x = 70,416,887.10/8,785.50
  6. Step 6: Final answer
    x = 8,015.13

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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.