Home / 2,283.47-3,151.13-1,288.69

Finding the Fourth Proportional to 2,283.47, 3,151.13 and 1,288.69

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Solution

The fourth proportional to 2,283.47, 3,151.13 and 1,288.69 is: 1,778.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,283.47 : 3,151.13 = 1,288.69 : x
  2. Step 2: Convert to fraction form
    2,283.47/3,151.13 = 1,288.69/x
  3. Step 3: Cross multiply
    2,283.47x = 3,151.13 × 1,288.69
  4. Step 4: Simplify right side
    2,283.47x = 4,060,815.40
  5. Step 5: Solve for x
    x = 4,060,815.40/2,283.47
  6. Step 6: Final answer
    x = 1,778.36

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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.