Home / 1,521.47-2,280.38-903.84

Finding the Fourth Proportional to 1,521.47, 2,280.38 and 903.84

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Solution

The fourth proportional to 1,521.47, 2,280.38 and 903.84 is: 1,354.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.47 : 2,280.38 = 903.84 : x
  2. Step 2: Convert to fraction form
    1,521.47/2,280.38 = 903.84/x
  3. Step 3: Cross multiply
    1,521.47x = 2,280.38 × 903.84
  4. Step 4: Simplify right side
    1,521.47x = 2,061,094.14
  5. Step 5: Solve for x
    x = 2,061,094.14/1,521.47
  6. Step 6: Final answer
    x = 1,354.68

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1.5x scale

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.