Home / 3,985.71-5,501.76-3,423.93

Finding the Fourth Proportional to 3,985.71, 5,501.76 and 3,423.93

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Solution

The fourth proportional to 3,985.71, 5,501.76 and 3,423.93 is: 4,726.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.71 : 5,501.76 = 3,423.93 : x
  2. Step 2: Convert to fraction form
    3,985.71/5,501.76 = 3,423.93/x
  3. Step 3: Cross multiply
    3,985.71x = 5,501.76 × 3,423.93
  4. Step 4: Simplify right side
    3,985.71x = 18,837,641.12
  5. Step 5: Solve for x
    x = 18,837,641.12/3,985.71
  6. Step 6: Final answer
    x = 4,726.29

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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.