Home / 2,989.50-4,125.51-1,747.50

Finding the Fourth Proportional to 2,989.50, 4,125.51 and 1,747.50

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Solution

The fourth proportional to 2,989.50, 4,125.51 and 1,747.50 is: 2,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,989.50 : 4,125.51 = 1,747.50 : x
  2. Step 2: Convert to fraction form
    2,989.50/4,125.51 = 1,747.50/x
  3. Step 3: Cross multiply
    2,989.50x = 4,125.51 × 1,747.50
  4. Step 4: Simplify right side
    2,989.50x = 7,209,328.73
  5. Step 5: Solve for x
    x = 7,209,328.73/2,989.50
  6. Step 6: Final answer
    x = 2,411.55

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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.