Home / 3,988.41-5,502.87-2,309.82

Finding the Fourth Proportional to 3,988.41, 5,502.87 and 2,309.82

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Solution

The fourth proportional to 3,988.41, 5,502.87 and 2,309.82 is: 3,186.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.41 : 5,502.87 = 2,309.82 : x
  2. Step 2: Convert to fraction form
    3,988.41/5,502.87 = 2,309.82/x
  3. Step 3: Cross multiply
    3,988.41x = 5,502.87 × 2,309.82
  4. Step 4: Simplify right side
    3,988.41x = 12,710,639.18
  5. Step 5: Solve for x
    x = 12,710,639.18/3,988.41
  6. Step 6: Final answer
    x = 3,186.89

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1.5x scale

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.