Home / 7,489.40-11,155.59-7,110.32

Finding the Fourth Proportional to 7,489.40, 11,155.59 and 7,110.32

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Solution

The fourth proportional to 7,489.40, 11,155.59 and 7,110.32 is: 10,590.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,489.40 : 11,155.59 = 7,110.32 : x
  2. Step 2: Convert to fraction form
    7,489.40/11,155.59 = 7,110.32/x
  3. Step 3: Cross multiply
    7,489.40x = 11,155.59 × 7,110.32
  4. Step 4: Simplify right side
    7,489.40x = 79,319,758.91
  5. Step 5: Solve for x
    x = 79,319,758.91/7,489.40
  6. Step 6: Final answer
    x = 10,590.94

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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.