Home / 5,518.32-7,615.20-3,281.28

Finding the Fourth Proportional to 5,518.32, 7,615.20 and 3,281.28

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Solution

The fourth proportional to 5,518.32, 7,615.20 and 3,281.28 is: 4,528.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.32 : 7,615.20 = 3,281.28 : x
  2. Step 2: Convert to fraction form
    5,518.32/7,615.20 = 3,281.28/x
  3. Step 3: Cross multiply
    5,518.32x = 7,615.20 × 3,281.28
  4. Step 4: Simplify right side
    5,518.32x = 24,987,603.46
  5. Step 5: Solve for x
    x = 24,987,603.46/5,518.32
  6. Step 6: Final answer
    x = 4,528.12

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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.