Home / 1,562.38-2,155.80-933.28

Finding the Fourth Proportional to 1,562.38, 2,155.80 and 933.28

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Solution

The fourth proportional to 1,562.38, 2,155.80 and 933.28 is: 1,287.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.38 : 2,155.80 = 933.28 : x
  2. Step 2: Convert to fraction form
    1,562.38/2,155.80 = 933.28/x
  3. Step 3: Cross multiply
    1,562.38x = 2,155.80 × 933.28
  4. Step 4: Simplify right side
    1,562.38x = 2,011,965.02
  5. Step 5: Solve for x
    x = 2,011,965.02/1,562.38
  6. Step 6: Final answer
    x = 1,287.76

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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.