Home / 8,986.19-12,402.57-5,211.77

Finding the Fourth Proportional to 8,986.19, 12,402.57 and 5,211.77

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Solution

The fourth proportional to 8,986.19, 12,402.57 and 5,211.77 is: 7,193.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.19 : 12,402.57 = 5,211.77 : x
  2. Step 2: Convert to fraction form
    8,986.19/12,402.57 = 5,211.77/x
  3. Step 3: Cross multiply
    8,986.19x = 12,402.57 × 5,211.77
  4. Step 4: Simplify right side
    8,986.19x = 64,639,342.25
  5. Step 5: Solve for x
    x = 64,639,342.25/8,986.19
  6. Step 6: Final answer
    x = 7,193.19

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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.