Home / 4,311.84-5,947.20-2,985.60

Finding the Fourth Proportional to 4,311.84, 5,947.20 and 2,985.60

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Solution

The fourth proportional to 4,311.84, 5,947.20 and 2,985.60 is: 4,117.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,311.84 : 5,947.20 = 2,985.60 : x
  2. Step 2: Convert to fraction form
    4,311.84/5,947.20 = 2,985.60/x
  3. Step 3: Cross multiply
    4,311.84x = 5,947.20 × 2,985.60
  4. Step 4: Simplify right side
    4,311.84x = 17,755,960.32
  5. Step 5: Solve for x
    x = 17,755,960.32/4,311.84
  6. Step 6: Final answer
    x = 4,117.95

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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.