Home / 6,630.20-9,938.10-2,931.80

Finding the Fourth Proportional to 6,630.20, 9,938.10 and 2,931.80

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Solution

The fourth proportional to 6,630.20, 9,938.10 and 2,931.80 is: 4,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.20 : 9,938.10 = 2,931.80 : x
  2. Step 2: Convert to fraction form
    6,630.20/9,938.10 = 2,931.80/x
  3. Step 3: Cross multiply
    6,630.20x = 9,938.10 × 2,931.80
  4. Step 4: Simplify right side
    6,630.20x = 29,136,521.58
  5. Step 5: Solve for x
    x = 29,136,521.58/6,630.20
  6. Step 6: Final answer
    x = 4,394.52

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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.