Home / 2,456.40-3,386.25-1,865.91

Finding the Fourth Proportional to 2,456.40, 3,386.25 and 1,865.91

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Solution

The fourth proportional to 2,456.40, 3,386.25 and 1,865.91 is: 2,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,456.40 : 3,386.25 = 1,865.91 : x
  2. Step 2: Convert to fraction form
    2,456.40/3,386.25 = 1,865.91/x
  3. Step 3: Cross multiply
    2,456.40x = 3,386.25 × 1,865.91
  4. Step 4: Simplify right side
    2,456.40x = 6,318,437.74
  5. Step 5: Solve for x
    x = 6,318,437.74/2,456.40
  6. Step 6: Final answer
    x = 2,572.23

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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.