Home / 1,561.46-2,155.19-1,030.43

Finding the Fourth Proportional to 1,561.46, 2,155.19 and 1,030.43

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Solution

The fourth proportional to 1,561.46, 2,155.19 and 1,030.43 is: 1,422.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.46 : 2,155.19 = 1,030.43 : x
  2. Step 2: Convert to fraction form
    1,561.46/2,155.19 = 1,030.43/x
  3. Step 3: Cross multiply
    1,561.46x = 2,155.19 × 1,030.43
  4. Step 4: Simplify right side
    1,561.46x = 2,220,772.67
  5. Step 5: Solve for x
    x = 2,220,772.67/1,561.46
  6. Step 6: Final answer
    x = 1,422.25

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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.