Home / 1,510.28-2,264.34-688.13

Finding the Fourth Proportional to 1,510.28, 2,264.34 and 688.13

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Solution

The fourth proportional to 1,510.28, 2,264.34 and 688.13 is: 1,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.28 : 2,264.34 = 688.13 : x
  2. Step 2: Convert to fraction form
    1,510.28/2,264.34 = 688.13/x
  3. Step 3: Cross multiply
    1,510.28x = 2,264.34 × 688.13
  4. Step 4: Simplify right side
    1,510.28x = 1,558,160.28
  5. Step 5: Solve for x
    x = 1,558,160.28/1,510.28
  6. Step 6: Final answer
    x = 1,031.70

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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.