Home / 2,179.60-3,264.48-1,312.16

Finding the Fourth Proportional to 2,179.60, 3,264.48 and 1,312.16

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Solution

The fourth proportional to 2,179.60, 3,264.48 and 1,312.16 is: 1,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.60 : 3,264.48 = 1,312.16 : x
  2. Step 2: Convert to fraction form
    2,179.60/3,264.48 = 1,312.16/x
  3. Step 3: Cross multiply
    2,179.60x = 3,264.48 × 1,312.16
  4. Step 4: Simplify right side
    2,179.60x = 4,283,520.08
  5. Step 5: Solve for x
    x = 4,283,520.08/2,179.60
  6. Step 6: Final answer
    x = 1,965.28

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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.