Home / 8,785.18-12,123.84-5,247.91

Finding the Fourth Proportional to 8,785.18, 12,123.84 and 5,247.91

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Solution

The fourth proportional to 8,785.18, 12,123.84 and 5,247.91 is: 7,242.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.18 : 12,123.84 = 5,247.91 : x
  2. Step 2: Convert to fraction form
    8,785.18/12,123.84 = 5,247.91/x
  3. Step 3: Cross multiply
    8,785.18x = 12,123.84 × 5,247.91
  4. Step 4: Simplify right side
    8,785.18x = 63,624,821.17
  5. Step 5: Solve for x
    x = 63,624,821.17/8,785.18
  6. Step 6: Final answer
    x = 7,242.29

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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.