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Finding the Fourth Proportional to 2,547.65, 3,821.11 and 903.98

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Solution

The fourth proportional to 2,547.65, 3,821.11 and 903.98 is: 1,355.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,547.65 : 3,821.11 = 903.98 : x
  2. Step 2: Convert to fraction form
    2,547.65/3,821.11 = 903.98/x
  3. Step 3: Cross multiply
    2,547.65x = 3,821.11 × 903.98
  4. Step 4: Simplify right side
    2,547.65x = 3,454,207.02
  5. Step 5: Solve for x
    x = 3,454,207.02/2,547.65
  6. Step 6: Final answer
    x = 1,355.84

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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.