Home / 8,442.51-11,639.73-5,785.17

Finding the Fourth Proportional to 8,442.51, 11,639.73 and 5,785.17

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Solution

The fourth proportional to 8,442.51, 11,639.73 and 5,785.17 is: 7,976.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.51 : 11,639.73 = 5,785.17 : x
  2. Step 2: Convert to fraction form
    8,442.51/11,639.73 = 5,785.17/x
  3. Step 3: Cross multiply
    8,442.51x = 11,639.73 × 5,785.17
  4. Step 4: Simplify right side
    8,442.51x = 67,337,816.80
  5. Step 5: Solve for x
    x = 67,337,816.80/8,442.51
  6. Step 6: Final answer
    x = 7,976.04

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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.