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Finding the Fourth Proportional to 4,613.70, 6,920.10 and 1,326.72

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Solution

The fourth proportional to 4,613.70, 6,920.10 and 1,326.72 is: 1,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,613.70 : 6,920.10 = 1,326.72 : x
  2. Step 2: Convert to fraction form
    4,613.70/6,920.10 = 1,326.72/x
  3. Step 3: Cross multiply
    4,613.70x = 6,920.10 × 1,326.72
  4. Step 4: Simplify right side
    4,613.70x = 9,181,035.07
  5. Step 5: Solve for x
    x = 9,181,035.07/4,613.70
  6. Step 6: Final answer
    x = 1,989.95

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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.