Home / 1,432.08-2,146.68-1,259.28

Finding the Fourth Proportional to 1,432.08, 2,146.68 and 1,259.28

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Solution

The fourth proportional to 1,432.08, 2,146.68 and 1,259.28 is: 1,887.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.08 : 2,146.68 = 1,259.28 : x
  2. Step 2: Convert to fraction form
    1,432.08/2,146.68 = 1,259.28/x
  3. Step 3: Cross multiply
    1,432.08x = 2,146.68 × 1,259.28
  4. Step 4: Simplify right side
    1,432.08x = 2,703,271.19
  5. Step 5: Solve for x
    x = 2,703,271.19/1,432.08
  6. Step 6: Final answer
    x = 1,887.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.