Home / 8,785.40-12,116.58-6,395.36

Finding the Fourth Proportional to 8,785.40, 12,116.58 and 6,395.36

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Solution

The fourth proportional to 8,785.40, 12,116.58 and 6,395.36 is: 8,820.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.40 : 12,116.58 = 6,395.36 : x
  2. Step 2: Convert to fraction form
    8,785.40/12,116.58 = 6,395.36/x
  3. Step 3: Cross multiply
    8,785.40x = 12,116.58 × 6,395.36
  4. Step 4: Simplify right side
    8,785.40x = 77,489,891.07
  5. Step 5: Solve for x
    x = 77,489,891.07/8,785.40
  6. Step 6: Final answer
    x = 8,820.30

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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.