Home / 1,946.87-2,685.48-1,387.52

Finding the Fourth Proportional to 1,946.87, 2,685.48 and 1,387.52

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Solution

The fourth proportional to 1,946.87, 2,685.48 and 1,387.52 is: 1,913.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.87 : 2,685.48 = 1,387.52 : x
  2. Step 2: Convert to fraction form
    1,946.87/2,685.48 = 1,387.52/x
  3. Step 3: Cross multiply
    1,946.87x = 2,685.48 × 1,387.52
  4. Step 4: Simplify right side
    1,946.87x = 3,726,156.45
  5. Step 5: Solve for x
    x = 3,726,156.45/1,946.87
  6. Step 6: Final answer
    x = 1,913.92

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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.