Home / 1,461.08-2,192.61-638.89

Finding the Fourth Proportional to 1,461.08, 2,192.61 and 638.89

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Solution

The fourth proportional to 1,461.08, 2,192.61 and 638.89 is: 958.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461.08 : 2,192.61 = 638.89 : x
  2. Step 2: Convert to fraction form
    1,461.08/2,192.61 = 638.89/x
  3. Step 3: Cross multiply
    1,461.08x = 2,192.61 × 638.89
  4. Step 4: Simplify right side
    1,461.08x = 1,400,836.60
  5. Step 5: Solve for x
    x = 1,400,836.60/1,461.08
  6. Step 6: Final answer
    x = 958.77

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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.