Home / 8,434.74-12,654.90-5,311.08

Finding the Fourth Proportional to 8,434.74, 12,654.90 and 5,311.08

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Solution

The fourth proportional to 8,434.74, 12,654.90 and 5,311.08 is: 7,968.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,434.74 : 12,654.90 = 5,311.08 : x
  2. Step 2: Convert to fraction form
    8,434.74/12,654.90 = 5,311.08/x
  3. Step 3: Cross multiply
    8,434.74x = 12,654.90 × 5,311.08
  4. Step 4: Simplify right side
    8,434.74x = 67,211,186.29
  5. Step 5: Solve for x
    x = 67,211,186.29/8,434.74
  6. Step 6: Final answer
    x = 7,968.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.