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Finding the Fourth Proportional to 7,393.40, 10,187.40 and 5,031.44

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Solution

The fourth proportional to 7,393.40, 10,187.40 and 5,031.44 is: 6,932.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,393.40 : 10,187.40 = 5,031.44 : x
  2. Step 2: Convert to fraction form
    7,393.40/10,187.40 = 5,031.44/x
  3. Step 3: Cross multiply
    7,393.40x = 10,187.40 × 5,031.44
  4. Step 4: Simplify right side
    7,393.40x = 51,257,291.86
  5. Step 5: Solve for x
    x = 51,257,291.86/7,393.40
  6. Step 6: Final answer
    x = 6,932.84

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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.