Home / 5,618.40-7,751.79-3,630.12

Finding the Fourth Proportional to 5,618.40, 7,751.79 and 3,630.12

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Solution

The fourth proportional to 5,618.40, 7,751.79 and 3,630.12 is: 5,008.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.40 : 7,751.79 = 3,630.12 : x
  2. Step 2: Convert to fraction form
    5,618.40/7,751.79 = 3,630.12/x
  3. Step 3: Cross multiply
    5,618.40x = 7,751.79 × 3,630.12
  4. Step 4: Simplify right side
    5,618.40x = 28,139,927.91
  5. Step 5: Solve for x
    x = 28,139,927.91/5,618.40
  6. Step 6: Final answer
    x = 5,008.53

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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.