Home / 1,981.47-2,970.18-1,432.29

Finding the Fourth Proportional to 1,981.47, 2,970.18 and 1,432.29

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Solution

The fourth proportional to 1,981.47, 2,970.18 and 1,432.29 is: 2,146.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.47 : 2,970.18 = 1,432.29 : x
  2. Step 2: Convert to fraction form
    1,981.47/2,970.18 = 1,432.29/x
  3. Step 3: Cross multiply
    1,981.47x = 2,970.18 × 1,432.29
  4. Step 4: Simplify right side
    1,981.47x = 4,254,159.11
  5. Step 5: Solve for x
    x = 4,254,159.11/1,981.47
  6. Step 6: Final answer
    x = 2,146.97

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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.