Home / 8,781.51-13,157.64-6,178.98

Finding the Fourth Proportional to 8,781.51, 13,157.64 and 6,178.98

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Solution

The fourth proportional to 8,781.51, 13,157.64 and 6,178.98 is: 9,258.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.51 : 13,157.64 = 6,178.98 : x
  2. Step 2: Convert to fraction form
    8,781.51/13,157.64 = 6,178.98/x
  3. Step 3: Cross multiply
    8,781.51x = 13,157.64 × 6,178.98
  4. Step 4: Simplify right side
    8,781.51x = 81,300,794.41
  5. Step 5: Solve for x
    x = 81,300,794.41/8,781.51
  6. Step 6: Final answer
    x = 9,258.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.