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Finding the Fourth Proportional to 8,187.40, 11,298.18 and 4,461.40

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Solution

The fourth proportional to 8,187.40, 11,298.18 and 4,461.40 is: 6,156.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.40 : 11,298.18 = 4,461.40 : x
  2. Step 2: Convert to fraction form
    8,187.40/11,298.18 = 4,461.40/x
  3. Step 3: Cross multiply
    8,187.40x = 11,298.18 × 4,461.40
  4. Step 4: Simplify right side
    8,187.40x = 50,405,700.25
  5. Step 5: Solve for x
    x = 50,405,700.25/8,187.40
  6. Step 6: Final answer
    x = 6,156.50

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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.