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Finding the Fourth Proportional to 9,853.78, 13,598.10 and 5,377.61

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Solution

The fourth proportional to 9,853.78, 13,598.10 and 5,377.61 is: 7,421.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,853.78 : 13,598.10 = 5,377.61 : x
  2. Step 2: Convert to fraction form
    9,853.78/13,598.10 = 5,377.61/x
  3. Step 3: Cross multiply
    9,853.78x = 13,598.10 × 5,377.61
  4. Step 4: Simplify right side
    9,853.78x = 73,125,244.55
  5. Step 5: Solve for x
    x = 73,125,244.55/9,853.78
  6. Step 6: Final answer
    x = 7,421.03

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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.