Home / 1,460.13-2,190.65-638.48

Finding the Fourth Proportional to 1,460.13, 2,190.65 and 638.48

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Solution

The fourth proportional to 1,460.13, 2,190.65 and 638.48 is: 957.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.13 : 2,190.65 = 638.48 : x
  2. Step 2: Convert to fraction form
    1,460.13/2,190.65 = 638.48/x
  3. Step 3: Cross multiply
    1,460.13x = 2,190.65 × 638.48
  4. Step 4: Simplify right side
    1,460.13x = 1,398,688.50
  5. Step 5: Solve for x
    x = 1,398,688.50/1,460.13
  6. Step 6: Final answer
    x = 957.92

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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.