Home / 1,358.70-2,045.45-1,237.74

Finding the Fourth Proportional to 1,358.70, 2,045.45 and 1,237.74

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Solution

The fourth proportional to 1,358.70, 2,045.45 and 1,237.74 is: 1,863.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.70 : 2,045.45 = 1,237.74 : x
  2. Step 2: Convert to fraction form
    1,358.70/2,045.45 = 1,237.74/x
  3. Step 3: Cross multiply
    1,358.70x = 2,045.45 × 1,237.74
  4. Step 4: Simplify right side
    1,358.70x = 2,531,729.09
  5. Step 5: Solve for x
    x = 2,531,729.09/1,358.70
  6. Step 6: Final answer
    x = 1,863.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.