Home / 8,985.23-12,398.66-5,209.58

Finding the Fourth Proportional to 8,985.23, 12,398.66 and 5,209.58

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Solution

The fourth proportional to 8,985.23, 12,398.66 and 5,209.58 is: 7,188.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.23 : 12,398.66 = 5,209.58 : x
  2. Step 2: Convert to fraction form
    8,985.23/12,398.66 = 5,209.58/x
  3. Step 3: Cross multiply
    8,985.23x = 12,398.66 × 5,209.58
  4. Step 4: Simplify right side
    8,985.23x = 64,591,811.16
  5. Step 5: Solve for x
    x = 64,591,811.16/8,985.23
  6. Step 6: Final answer
    x = 7,188.67

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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.