Home / 1,510.22-2,084.24-921.35

Finding the Fourth Proportional to 1,510.22, 2,084.24 and 921.35

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Solution

The fourth proportional to 1,510.22, 2,084.24 and 921.35 is: 1,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,510.22 : 2,084.24 = 921.35 : x
  2. Step 2: Convert to fraction form
    1,510.22/2,084.24 = 921.35/x
  3. Step 3: Cross multiply
    1,510.22x = 2,084.24 × 921.35
  4. Step 4: Simplify right side
    1,510.22x = 1,920,306.41
  5. Step 5: Solve for x
    x = 1,920,306.41/1,510.22
  6. Step 6: Final answer
    x = 1,271.55

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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.