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Finding the Fourth Proportional to 5,613.94, 8,418.47 and 2,980.87

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Solution

The fourth proportional to 5,613.94, 8,418.47 and 2,980.87 is: 4,470.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,613.94 : 8,418.47 = 2,980.87 : x
  2. Step 2: Convert to fraction form
    5,613.94/8,418.47 = 2,980.87/x
  3. Step 3: Cross multiply
    5,613.94x = 8,418.47 × 2,980.87
  4. Step 4: Simplify right side
    5,613.94x = 25,094,337.10
  5. Step 5: Solve for x
    x = 25,094,337.10/5,613.94
  6. Step 6: Final answer
    x = 4,470.01

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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.