Home / 8,986.18-12,400.95-5,210.08

Finding the Fourth Proportional to 8,986.18, 12,400.95 and 5,210.08

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Solution

The fourth proportional to 8,986.18, 12,400.95 and 5,210.08 is: 7,189.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.18 : 12,400.95 = 5,210.08 : x
  2. Step 2: Convert to fraction form
    8,986.18/12,400.95 = 5,210.08/x
  3. Step 3: Cross multiply
    8,986.18x = 12,400.95 × 5,210.08
  4. Step 4: Simplify right side
    8,986.18x = 64,609,941.58
  5. Step 5: Solve for x
    x = 64,609,941.58/8,986.18
  6. Step 6: Final answer
    x = 7,189.92

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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.