Home / 1,518.60-2,097.78-1,439.76

Finding the Fourth Proportional to 1,518.60, 2,097.78 and 1,439.76

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Solution

The fourth proportional to 1,518.60, 2,097.78 and 1,439.76 is: 1,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,518.60 : 2,097.78 = 1,439.76 : x
  2. Step 2: Convert to fraction form
    1,518.60/2,097.78 = 1,439.76/x
  3. Step 3: Cross multiply
    1,518.60x = 2,097.78 × 1,439.76
  4. Step 4: Simplify right side
    1,518.60x = 3,020,299.73
  5. Step 5: Solve for x
    x = 3,020,299.73/1,518.60
  6. Step 6: Final answer
    x = 1,988.87

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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.