Home / 7,180.08-9,908.40-4,036.20

Finding the Fourth Proportional to 7,180.08, 9,908.40 and 4,036.20

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Solution

The fourth proportional to 7,180.08, 9,908.40 and 4,036.20 is: 5,569.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.08 : 9,908.40 = 4,036.20 : x
  2. Step 2: Convert to fraction form
    7,180.08/9,908.40 = 4,036.20/x
  3. Step 3: Cross multiply
    7,180.08x = 9,908.40 × 4,036.20
  4. Step 4: Simplify right side
    7,180.08x = 39,992,284.08
  5. Step 5: Solve for x
    x = 39,992,284.08/7,180.08
  6. Step 6: Final answer
    x = 5,569.89

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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.