Home / 1,955.20-2,912.08-1,887.04

Finding the Fourth Proportional to 1,955.20, 2,912.08 and 1,887.04

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Solution

The fourth proportional to 1,955.20, 2,912.08 and 1,887.04 is: 2,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,955.20 : 2,912.08 = 1,887.04 : x
  2. Step 2: Convert to fraction form
    1,955.20/2,912.08 = 1,887.04/x
  3. Step 3: Cross multiply
    1,955.20x = 2,912.08 × 1,887.04
  4. Step 4: Simplify right side
    1,955.20x = 5,495,211.44
  5. Step 5: Solve for x
    x = 5,495,211.44/1,955.20
  6. Step 6: Final answer
    x = 2,810.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.