Home / 8,969.13-12,377.48-4,990.41

Finding the Fourth Proportional to 8,969.13, 12,377.48 and 4,990.41

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Solution

The fourth proportional to 8,969.13, 12,377.48 and 4,990.41 is: 6,886.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.13 : 12,377.48 = 4,990.41 : x
  2. Step 2: Convert to fraction form
    8,969.13/12,377.48 = 4,990.41/x
  3. Step 3: Cross multiply
    8,969.13x = 12,377.48 × 4,990.41
  4. Step 4: Simplify right side
    8,969.13x = 61,768,675.01
  5. Step 5: Solve for x
    x = 61,768,675.01/8,969.13
  6. Step 6: Final answer
    x = 6,886.81

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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.