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Finding the Fourth Proportional to 5,279.76, 7,925.76 and 3,090.08

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Solution

The fourth proportional to 5,279.76, 7,925.76 and 3,090.08 is: 4,638.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.76 : 7,925.76 = 3,090.08 : x
  2. Step 2: Convert to fraction form
    5,279.76/7,925.76 = 3,090.08/x
  3. Step 3: Cross multiply
    5,279.76x = 7,925.76 × 3,090.08
  4. Step 4: Simplify right side
    5,279.76x = 24,491,232.46
  5. Step 5: Solve for x
    x = 24,491,232.46/5,279.76
  6. Step 6: Final answer
    x = 4,638.70

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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.