Home / 1,770.59-2,439.19-1,238.48

Finding the Fourth Proportional to 1,770.59, 2,439.19 and 1,238.48

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Solution

The fourth proportional to 1,770.59, 2,439.19 and 1,238.48 is: 1,706.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,770.59 : 2,439.19 = 1,238.48 : x
  2. Step 2: Convert to fraction form
    1,770.59/2,439.19 = 1,238.48/x
  3. Step 3: Cross multiply
    1,770.59x = 2,439.19 × 1,238.48
  4. Step 4: Simplify right side
    1,770.59x = 3,020,889.91
  5. Step 5: Solve for x
    x = 3,020,889.91/1,770.59
  6. Step 6: Final answer
    x = 1,706.15

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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.