Home / 5,641.76-7,781.88-3,518.24

Finding the Fourth Proportional to 5,641.76, 7,781.88 and 3,518.24

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Solution

The fourth proportional to 5,641.76, 7,781.88 and 3,518.24 is: 4,852.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.76 : 7,781.88 = 3,518.24 : x
  2. Step 2: Convert to fraction form
    5,641.76/7,781.88 = 3,518.24/x
  3. Step 3: Cross multiply
    5,641.76x = 7,781.88 × 3,518.24
  4. Step 4: Simplify right side
    5,641.76x = 27,378,521.49
  5. Step 5: Solve for x
    x = 27,378,521.49/5,641.76
  6. Step 6: Final answer
    x = 4,852.83

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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.