Home / 8,969.05-12,377.26-4,990.07

Finding the Fourth Proportional to 8,969.05, 12,377.26 and 4,990.07

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Solution

The fourth proportional to 8,969.05, 12,377.26 and 4,990.07 is: 6,886.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,969.05 : 12,377.26 = 4,990.07 : x
  2. Step 2: Convert to fraction form
    8,969.05/12,377.26 = 4,990.07/x
  3. Step 3: Cross multiply
    8,969.05x = 12,377.26 × 4,990.07
  4. Step 4: Simplify right side
    8,969.05x = 61,763,393.81
  5. Step 5: Solve for x
    x = 61,763,393.81/8,969.05
  6. Step 6: Final answer
    x = 6,886.28

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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.