Home / 7,714.90-10,646.54-4,178.12

Finding the Fourth Proportional to 7,714.90, 10,646.54 and 4,178.12

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Solution

The fourth proportional to 7,714.90, 10,646.54 and 4,178.12 is: 5,765.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,714.90 : 10,646.54 = 4,178.12 : x
  2. Step 2: Convert to fraction form
    7,714.90/10,646.54 = 4,178.12/x
  3. Step 3: Cross multiply
    7,714.90x = 10,646.54 × 4,178.12
  4. Step 4: Simplify right side
    7,714.90x = 44,482,521.70
  5. Step 5: Solve for x
    x = 44,482,521.70/7,714.90
  6. Step 6: Final answer
    x = 5,765.79

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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.