Home / 7,439.12-11,155.40-2,818.88

Finding the Fourth Proportional to 7,439.12, 11,155.40 and 2,818.88

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Solution

The fourth proportional to 7,439.12, 11,155.40 and 2,818.88 is: 4,227.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,439.12 : 11,155.40 = 2,818.88 : x
  2. Step 2: Convert to fraction form
    7,439.12/11,155.40 = 2,818.88/x
  3. Step 3: Cross multiply
    7,439.12x = 11,155.40 × 2,818.88
  4. Step 4: Simplify right side
    7,439.12x = 31,445,733.95
  5. Step 5: Solve for x
    x = 31,445,733.95/7,439.12
  6. Step 6: Final answer
    x = 4,227.08

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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.