Home / 1,432.23-1,977.39-1,117.82

Finding the Fourth Proportional to 1,432.23, 1,977.39 and 1,117.82

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Solution

The fourth proportional to 1,432.23, 1,977.39 and 1,117.82 is: 1,543.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.23 : 1,977.39 = 1,117.82 : x
  2. Step 2: Convert to fraction form
    1,432.23/1,977.39 = 1,117.82/x
  3. Step 3: Cross multiply
    1,432.23x = 1,977.39 × 1,117.82
  4. Step 4: Simplify right side
    1,432.23x = 2,210,366.09
  5. Step 5: Solve for x
    x = 2,210,366.09/1,432.23
  6. Step 6: Final answer
    x = 1,543.30

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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.