Home / 5,590.40-7,715.12-3,698.69

Finding the Fourth Proportional to 5,590.40, 7,715.12 and 3,698.69

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Solution

The fourth proportional to 5,590.40, 7,715.12 and 3,698.69 is: 5,104.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,590.40 : 7,715.12 = 3,698.69 : x
  2. Step 2: Convert to fraction form
    5,590.40/7,715.12 = 3,698.69/x
  3. Step 3: Cross multiply
    5,590.40x = 7,715.12 × 3,698.69
  4. Step 4: Simplify right side
    5,590.40x = 28,535,780.12
  5. Step 5: Solve for x
    x = 28,535,780.12/5,590.40
  6. Step 6: Final answer
    x = 5,104.43

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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.