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Finding the Fourth Proportional to 6,486.74, 8,967.61 and 6,427.51

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Solution

The fourth proportional to 6,486.74, 8,967.61 and 6,427.51 is: 8,885.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,486.74 : 8,967.61 = 6,427.51 : x
  2. Step 2: Convert to fraction form
    6,486.74/8,967.61 = 6,427.51/x
  3. Step 3: Cross multiply
    6,486.74x = 8,967.61 × 6,427.51
  4. Step 4: Simplify right side
    6,486.74x = 57,639,342.04
  5. Step 5: Solve for x
    x = 57,639,342.04/6,486.74
  6. Step 6: Final answer
    x = 8,885.72

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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.