Home / 2,875.20-4,310.88-1,485.92

Finding the Fourth Proportional to 2,875.20, 4,310.88 and 1,485.92

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Solution

The fourth proportional to 2,875.20, 4,310.88 and 1,485.92 is: 2,227.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.20 : 4,310.88 = 1,485.92 : x
  2. Step 2: Convert to fraction form
    2,875.20/4,310.88 = 1,485.92/x
  3. Step 3: Cross multiply
    2,875.20x = 4,310.88 × 1,485.92
  4. Step 4: Simplify right side
    2,875.20x = 6,405,622.81
  5. Step 5: Solve for x
    x = 6,405,622.81/2,875.20
  6. Step 6: Final answer
    x = 2,227.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.