Home / 2,908.40-4,362.20-1,521.28

Finding the Fourth Proportional to 2,908.40, 4,362.20 and 1,521.28

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Solution

The fourth proportional to 2,908.40, 4,362.20 and 1,521.28 is: 2,281.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.40 : 4,362.20 = 1,521.28 : x
  2. Step 2: Convert to fraction form
    2,908.40/4,362.20 = 1,521.28/x
  3. Step 3: Cross multiply
    2,908.40x = 4,362.20 × 1,521.28
  4. Step 4: Simplify right side
    2,908.40x = 6,636,098.20
  5. Step 5: Solve for x
    x = 6,636,098.20/2,908.40
  6. Step 6: Final answer
    x = 2,281.70

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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.