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Finding the Fourth Proportional to 8,807.90, 12,145.83 and 6,154.34

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Solution

The fourth proportional to 8,807.90, 12,145.83 and 6,154.34 is: 8,486.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.90 : 12,145.83 = 6,154.34 : x
  2. Step 2: Convert to fraction form
    8,807.90/12,145.83 = 6,154.34/x
  3. Step 3: Cross multiply
    8,807.90x = 12,145.83 × 6,154.34
  4. Step 4: Simplify right side
    8,807.90x = 74,749,567.40
  5. Step 5: Solve for x
    x = 74,749,567.40/8,807.90
  6. Step 6: Final answer
    x = 8,486.65

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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.