Home / 3,681.65-5,522.78-1,490.40

Finding the Fourth Proportional to 3,681.65, 5,522.78 and 1,490.40

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Solution

The fourth proportional to 3,681.65, 5,522.78 and 1,490.40 is: 2,235.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.65 : 5,522.78 = 1,490.40 : x
  2. Step 2: Convert to fraction form
    3,681.65/5,522.78 = 1,490.40/x
  3. Step 3: Cross multiply
    3,681.65x = 5,522.78 × 1,490.40
  4. Step 4: Simplify right side
    3,681.65x = 8,231,155.04
  5. Step 5: Solve for x
    x = 8,231,155.04/3,681.65
  6. Step 6: Final answer
    x = 2,235.72

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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.