Home / 2,386.38-3,293.10-1,442.40

Finding the Fourth Proportional to 2,386.38, 3,293.10 and 1,442.40

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Solution

The fourth proportional to 2,386.38, 3,293.10 and 1,442.40 is: 1,990.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,386.38 : 3,293.10 = 1,442.40 : x
  2. Step 2: Convert to fraction form
    2,386.38/3,293.10 = 1,442.40/x
  3. Step 3: Cross multiply
    2,386.38x = 3,293.10 × 1,442.40
  4. Step 4: Simplify right side
    2,386.38x = 4,749,967.44
  5. Step 5: Solve for x
    x = 4,749,967.44/2,386.38
  6. Step 6: Final answer
    x = 1,990.45

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Half scale
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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.