Home / 1,981.32-2,966.51-1,492.89

Finding the Fourth Proportional to 1,981.32, 2,966.51 and 1,492.89

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Solution

The fourth proportional to 1,981.32, 2,966.51 and 1,492.89 is: 2,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.32 : 2,966.51 = 1,492.89 : x
  2. Step 2: Convert to fraction form
    1,981.32/2,966.51 = 1,492.89/x
  3. Step 3: Cross multiply
    1,981.32x = 2,966.51 × 1,492.89
  4. Step 4: Simplify right side
    1,981.32x = 4,428,665.65
  5. Step 5: Solve for x
    x = 4,428,665.65/1,981.32
  6. Step 6: Final answer
    x = 2,235.21

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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.