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Finding the Fourth Proportional to 6,358.78, 8,775.18 and 3,707.80

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Solution

The fourth proportional to 6,358.78, 8,775.18 and 3,707.80 is: 5,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,358.78 : 8,775.18 = 3,707.80 : x
  2. Step 2: Convert to fraction form
    6,358.78/8,775.18 = 3,707.80/x
  3. Step 3: Cross multiply
    6,358.78x = 8,775.18 × 3,707.80
  4. Step 4: Simplify right side
    6,358.78x = 32,536,612.40
  5. Step 5: Solve for x
    x = 32,536,612.40/6,358.78
  6. Step 6: Final answer
    x = 5,116.80

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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.