Home / 3,389.49-4,677.12-1,972.98

Finding the Fourth Proportional to 3,389.49, 4,677.12 and 1,972.98

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Solution

The fourth proportional to 3,389.49, 4,677.12 and 1,972.98 is: 2,722.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.49 : 4,677.12 = 1,972.98 : x
  2. Step 2: Convert to fraction form
    3,389.49/4,677.12 = 1,972.98/x
  3. Step 3: Cross multiply
    3,389.49x = 4,677.12 × 1,972.98
  4. Step 4: Simplify right side
    3,389.49x = 9,227,864.22
  5. Step 5: Solve for x
    x = 9,227,864.22/3,389.49
  6. Step 6: Final answer
    x = 2,722.49

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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.