Home / 1,731.04-2,388.90-985.13

Finding the Fourth Proportional to 1,731.04, 2,388.90 and 985.13

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Solution

The fourth proportional to 1,731.04, 2,388.90 and 985.13 is: 1,359.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.04 : 2,388.90 = 985.13 : x
  2. Step 2: Convert to fraction form
    1,731.04/2,388.90 = 985.13/x
  3. Step 3: Cross multiply
    1,731.04x = 2,388.90 × 985.13
  4. Step 4: Simplify right side
    1,731.04x = 2,353,365.11
  5. Step 5: Solve for x
    x = 2,353,365.11/1,731.04
  6. Step 6: Final answer
    x = 1,359.51

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1.5x scale

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.