Home / 8,072.04-11,139-5,419.08

Finding the Fourth Proportional to 8,072.04, 11,139 and 5,419.08

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Solution

The fourth proportional to 8,072.04, 11,139 and 5,419.08 is: 7,478.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,072.04 : 11,139 = 5,419.08 : x
  2. Step 2: Convert to fraction form
    8,072.04/11,139 = 5,419.08/x
  3. Step 3: Cross multiply
    8,072.04x = 11,139 × 5,419.08
  4. Step 4: Simplify right side
    8,072.04x = 60,363,132.12
  5. Step 5: Solve for x
    x = 60,363,132.12/8,072.04
  6. Step 6: Final answer
    x = 7,478.05

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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.