Home / 8,721.20-12,030.51-5,528.66

Finding the Fourth Proportional to 8,721.20, 12,030.51 and 5,528.66

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Solution

The fourth proportional to 8,721.20, 12,030.51 and 5,528.66 is: 7,626.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.20 : 12,030.51 = 5,528.66 : x
  2. Step 2: Convert to fraction form
    8,721.20/12,030.51 = 5,528.66/x
  3. Step 3: Cross multiply
    8,721.20x = 12,030.51 × 5,528.66
  4. Step 4: Simplify right side
    8,721.20x = 66,512,599.42
  5. Step 5: Solve for x
    x = 66,512,599.42/8,721.20
  6. Step 6: Final answer
    x = 7,626.54

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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.