Home / 1,477.28-2,038.52-813.96

Finding the Fourth Proportional to 1,477.28, 2,038.52 and 813.96

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Solution

The fourth proportional to 1,477.28, 2,038.52 and 813.96 is: 1,123.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,477.28 : 2,038.52 = 813.96 : x
  2. Step 2: Convert to fraction form
    1,477.28/2,038.52 = 813.96/x
  3. Step 3: Cross multiply
    1,477.28x = 2,038.52 × 813.96
  4. Step 4: Simplify right side
    1,477.28x = 1,659,269.67
  5. Step 5: Solve for x
    x = 1,659,269.67/1,477.28
  6. Step 6: Final answer
    x = 1,123.20

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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.