Home / 8,965.45-12,372.15-4,986.48

Finding the Fourth Proportional to 8,965.45, 12,372.15 and 4,986.48

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Solution

The fourth proportional to 8,965.45, 12,372.15 and 4,986.48 is: 6,881.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.45 : 12,372.15 = 4,986.48 : x
  2. Step 2: Convert to fraction form
    8,965.45/12,372.15 = 4,986.48/x
  3. Step 3: Cross multiply
    8,965.45x = 12,372.15 × 4,986.48
  4. Step 4: Simplify right side
    8,965.45x = 61,693,494.81
  5. Step 5: Solve for x
    x = 61,693,494.81/8,965.45
  6. Step 6: Final answer
    x = 6,881.25

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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.