Home / 1,510.11-2,084.13-921.24

Finding the Fourth Proportional to 1,510.11, 2,084.13 and 921.24

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Solution

The fourth proportional to 1,510.11, 2,084.13 and 921.24 is: 1,271.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.11 : 2,084.13 = 921.24 : x
  2. Step 2: Convert to fraction form
    1,510.11/2,084.13 = 921.24/x
  3. Step 3: Cross multiply
    1,510.11x = 2,084.13 × 921.24
  4. Step 4: Simplify right side
    1,510.11x = 1,919,983.92
  5. Step 5: Solve for x
    x = 1,919,983.92/1,510.11
  6. Step 6: Final answer
    x = 1,271.42

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Half scale
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Double scale
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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.