Home / 4,742.50-7,109.70-1,818.76

Finding the Fourth Proportional to 4,742.50, 7,109.70 and 1,818.76

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Solution

The fourth proportional to 4,742.50, 7,109.70 and 1,818.76 is: 2,726.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.50 : 7,109.70 = 1,818.76 : x
  2. Step 2: Convert to fraction form
    4,742.50/7,109.70 = 1,818.76/x
  3. Step 3: Cross multiply
    4,742.50x = 7,109.70 × 1,818.76
  4. Step 4: Simplify right side
    4,742.50x = 12,930,837.97
  5. Step 5: Solve for x
    x = 12,930,837.97/4,742.50
  6. Step 6: Final answer
    x = 2,726.59

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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.