Home / 5,118.60-7,675.38-1,655.40

Finding the Fourth Proportional to 5,118.60, 7,675.38 and 1,655.40

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Solution

The fourth proportional to 5,118.60, 7,675.38 and 1,655.40 is: 2,482.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.60 : 7,675.38 = 1,655.40 : x
  2. Step 2: Convert to fraction form
    5,118.60/7,675.38 = 1,655.40/x
  3. Step 3: Cross multiply
    5,118.60x = 7,675.38 × 1,655.40
  4. Step 4: Simplify right side
    5,118.60x = 12,705,824.05
  5. Step 5: Solve for x
    x = 12,705,824.05/5,118.60
  6. Step 6: Final answer
    x = 2,482.29

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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.