Home / 2,020.75-2,787.18-1,424.47

Finding the Fourth Proportional to 2,020.75, 2,787.18 and 1,424.47

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Solution

The fourth proportional to 2,020.75, 2,787.18 and 1,424.47 is: 1,964.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.75 : 2,787.18 = 1,424.47 : x
  2. Step 2: Convert to fraction form
    2,020.75/2,787.18 = 1,424.47/x
  3. Step 3: Cross multiply
    2,020.75x = 2,787.18 × 1,424.47
  4. Step 4: Simplify right side
    2,020.75x = 3,970,254.29
  5. Step 5: Solve for x
    x = 3,970,254.29/2,020.75
  6. Step 6: Final answer
    x = 1,964.74

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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.