Home / 5,278.08-7,914.96-1,989.52

Finding the Fourth Proportional to 5,278.08, 7,914.96 and 1,989.52

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Solution

The fourth proportional to 5,278.08, 7,914.96 and 1,989.52 is: 2,983.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.08 : 7,914.96 = 1,989.52 : x
  2. Step 2: Convert to fraction form
    5,278.08/7,914.96 = 1,989.52/x
  3. Step 3: Cross multiply
    5,278.08x = 7,914.96 × 1,989.52
  4. Step 4: Simplify right side
    5,278.08x = 15,746,971.22
  5. Step 5: Solve for x
    x = 15,746,971.22/5,278.08
  6. Step 6: Final answer
    x = 2,983.47

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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.