Home / 3,988.19-5,503.10-2,309.76

Finding the Fourth Proportional to 3,988.19, 5,503.10 and 2,309.76

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Solution

The fourth proportional to 3,988.19, 5,503.10 and 2,309.76 is: 3,187.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.19 : 5,503.10 = 2,309.76 : x
  2. Step 2: Convert to fraction form
    3,988.19/5,503.10 = 2,309.76/x
  3. Step 3: Cross multiply
    3,988.19x = 5,503.10 × 2,309.76
  4. Step 4: Simplify right side
    3,988.19x = 12,710,840.26
  5. Step 5: Solve for x
    x = 12,710,840.26/3,988.19
  6. Step 6: Final answer
    x = 3,187.12

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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.