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Finding the Fourth Proportional to 1,622.87, 2,239.76 and 924.11

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Solution

The fourth proportional to 1,622.87, 2,239.76 and 924.11 is: 1,275.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.87 : 2,239.76 = 924.11 : x
  2. Step 2: Convert to fraction form
    1,622.87/2,239.76 = 924.11/x
  3. Step 3: Cross multiply
    1,622.87x = 2,239.76 × 924.11
  4. Step 4: Simplify right side
    1,622.87x = 2,069,779.99
  5. Step 5: Solve for x
    x = 2,069,779.99/1,622.87
  6. Step 6: Final answer
    x = 1,275.38

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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.