Home / 3,118.64-4,300.80-1,938.08

Finding the Fourth Proportional to 3,118.64, 4,300.80 and 1,938.08

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Solution

The fourth proportional to 3,118.64, 4,300.80 and 1,938.08 is: 2,672.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.64 : 4,300.80 = 1,938.08 : x
  2. Step 2: Convert to fraction form
    3,118.64/4,300.80 = 1,938.08/x
  3. Step 3: Cross multiply
    3,118.64x = 4,300.80 × 1,938.08
  4. Step 4: Simplify right side
    3,118.64x = 8,335,294.46
  5. Step 5: Solve for x
    x = 8,335,294.46/3,118.64
  6. Step 6: Final answer
    x = 2,672.73

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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.