Home / 1,484.88-2,049.18-821.76

Finding the Fourth Proportional to 1,484.88, 2,049.18 and 821.76

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Solution

The fourth proportional to 1,484.88, 2,049.18 and 821.76 is: 1,134.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,484.88 : 2,049.18 = 821.76 : x
  2. Step 2: Convert to fraction form
    1,484.88/2,049.18 = 821.76/x
  3. Step 3: Cross multiply
    1,484.88x = 2,049.18 × 821.76
  4. Step 4: Simplify right side
    1,484.88x = 1,683,934.16
  5. Step 5: Solve for x
    x = 1,683,934.16/1,484.88
  6. Step 6: Final answer
    x = 1,134.05

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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.