Home / 2,988.67-4,123.17-1,729.49

Finding the Fourth Proportional to 2,988.67, 4,123.17 and 1,729.49

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Solution

The fourth proportional to 2,988.67, 4,123.17 and 1,729.49 is: 2,386.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,988.67 : 4,123.17 = 1,729.49 : x
  2. Step 2: Convert to fraction form
    2,988.67/4,123.17 = 1,729.49/x
  3. Step 3: Cross multiply
    2,988.67x = 4,123.17 × 1,729.49
  4. Step 4: Simplify right side
    2,988.67x = 7,130,981.28
  5. Step 5: Solve for x
    x = 7,130,981.28/2,988.67
  6. Step 6: Final answer
    x = 2,386.00

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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.