Home / 4,312.40-5,947.20-2,819.84

Finding the Fourth Proportional to 4,312.40, 5,947.20 and 2,819.84

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Solution

The fourth proportional to 4,312.40, 5,947.20 and 2,819.84 is: 3,888.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,312.40 : 5,947.20 = 2,819.84 : x
  2. Step 2: Convert to fraction form
    4,312.40/5,947.20 = 2,819.84/x
  3. Step 3: Cross multiply
    4,312.40x = 5,947.20 × 2,819.84
  4. Step 4: Simplify right side
    4,312.40x = 16,770,152.45
  5. Step 5: Solve for x
    x = 16,770,152.45/4,312.40
  6. Step 6: Final answer
    x = 3,888.82

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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.