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Finding the Fourth Proportional to 7,159.88, 10,739.34 and 2,479.76

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Solution

The fourth proportional to 7,159.88, 10,739.34 and 2,479.76 is: 3,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,159.88 : 10,739.34 = 2,479.76 : x
  2. Step 2: Convert to fraction form
    7,159.88/10,739.34 = 2,479.76/x
  3. Step 3: Cross multiply
    7,159.88x = 10,739.34 × 2,479.76
  4. Step 4: Simplify right side
    7,159.88x = 26,630,985.76
  5. Step 5: Solve for x
    x = 26,630,985.76/7,159.88
  6. Step 6: Final answer
    x = 3,719.47

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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.