Home / 2,378.59-3,281.34-1,539.56

Finding the Fourth Proportional to 2,378.59, 3,281.34 and 1,539.56

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Solution

The fourth proportional to 2,378.59, 3,281.34 and 1,539.56 is: 2,123.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,378.59 : 3,281.34 = 1,539.56 : x
  2. Step 2: Convert to fraction form
    2,378.59/3,281.34 = 1,539.56/x
  3. Step 3: Cross multiply
    2,378.59x = 3,281.34 × 1,539.56
  4. Step 4: Simplify right side
    2,378.59x = 5,051,819.81
  5. Step 5: Solve for x
    x = 5,051,819.81/2,378.59
  6. Step 6: Final answer
    x = 2,123.87

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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.