Home / 5,538.40-7,642.88-3,180.48

Finding the Fourth Proportional to 5,538.40, 7,642.88 and 3,180.48

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Solution

The fourth proportional to 5,538.40, 7,642.88 and 3,180.48 is: 4,389.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,538.40 : 7,642.88 = 3,180.48 : x
  2. Step 2: Convert to fraction form
    5,538.40/7,642.88 = 3,180.48/x
  3. Step 3: Cross multiply
    5,538.40x = 7,642.88 × 3,180.48
  4. Step 4: Simplify right side
    5,538.40x = 24,308,026.98
  5. Step 5: Solve for x
    x = 24,308,026.98/5,538.40
  6. Step 6: Final answer
    x = 4,389.00

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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.