Home / 9,871.39-13,613.10-6,463.32

Finding the Fourth Proportional to 9,871.39, 13,613.10 and 6,463.32

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Solution

The fourth proportional to 9,871.39, 13,613.10 and 6,463.32 is: 8,913.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,871.39 : 13,613.10 = 6,463.32 : x
  2. Step 2: Convert to fraction form
    9,871.39/13,613.10 = 6,463.32/x
  3. Step 3: Cross multiply
    9,871.39x = 13,613.10 × 6,463.32
  4. Step 4: Simplify right side
    9,871.39x = 87,985,771.30
  5. Step 5: Solve for x
    x = 87,985,771.30/9,871.39
  6. Step 6: Final answer
    x = 8,913.21

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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.