Home / 9,986.40-13,785.66-6,451.35

Finding the Fourth Proportional to 9,986.40, 13,785.66 and 6,451.35

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Solution

The fourth proportional to 9,986.40, 13,785.66 and 6,451.35 is: 8,905.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.40 : 13,785.66 = 6,451.35 : x
  2. Step 2: Convert to fraction form
    9,986.40/13,785.66 = 6,451.35/x
  3. Step 3: Cross multiply
    9,986.40x = 13,785.66 × 6,451.35
  4. Step 4: Simplify right side
    9,986.40x = 88,936,117.64
  5. Step 5: Solve for x
    x = 88,936,117.64/9,986.40
  6. Step 6: Final answer
    x = 8,905.72

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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.