Home / 9,348.19-12,900.50-5,156.44

Finding the Fourth Proportional to 9,348.19, 12,900.50 and 5,156.44

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Solution

The fourth proportional to 9,348.19, 12,900.50 and 5,156.44 is: 7,115.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.19 : 12,900.50 = 5,156.44 : x
  2. Step 2: Convert to fraction form
    9,348.19/12,900.50 = 5,156.44/x
  3. Step 3: Cross multiply
    9,348.19x = 12,900.50 × 5,156.44
  4. Step 4: Simplify right side
    9,348.19x = 66,520,615.52
  5. Step 5: Solve for x
    x = 66,520,615.52/9,348.19
  6. Step 6: Final answer
    x = 7,115.88

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Double scale
Find fourth proportional to 9,349.19, 12,901.88 and 5,157.44
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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.