Home / 8,985.42-12,400.14-5,208.60

Finding the Fourth Proportional to 8,985.42, 12,400.14 and 5,208.60

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Solution

The fourth proportional to 8,985.42, 12,400.14 and 5,208.60 is: 7,188.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.42 : 12,400.14 = 5,208.60 : x
  2. Step 2: Convert to fraction form
    8,985.42/12,400.14 = 5,208.60/x
  3. Step 3: Cross multiply
    8,985.42x = 12,400.14 × 5,208.60
  4. Step 4: Simplify right side
    8,985.42x = 64,587,369.20
  5. Step 5: Solve for x
    x = 64,587,369.20/8,985.42
  6. Step 6: Final answer
    x = 7,188.02

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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.