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Finding the Fourth Proportional to 1,562.84, 2,156.70 and 924.62

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Solution

The fourth proportional to 1,562.84, 2,156.70 and 924.62 is: 1,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,562.84 : 2,156.70 = 924.62 : x
  2. Step 2: Convert to fraction form
    1,562.84/2,156.70 = 924.62/x
  3. Step 3: Cross multiply
    1,562.84x = 2,156.70 × 924.62
  4. Step 4: Simplify right side
    1,562.84x = 1,994,127.95
  5. Step 5: Solve for x
    x = 1,994,127.95/1,562.84
  6. Step 6: Final answer
    x = 1,275.96

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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.