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Finding the Fourth Proportional to 8,847.90, 12,210.03 and 5,313.15

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Solution

The fourth proportional to 8,847.90, 12,210.03 and 5,313.15 is: 7,332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,847.90 : 12,210.03 = 5,313.15 : x
  2. Step 2: Convert to fraction form
    8,847.90/12,210.03 = 5,313.15/x
  3. Step 3: Cross multiply
    8,847.90x = 12,210.03 × 5,313.15
  4. Step 4: Simplify right side
    8,847.90x = 64,873,720.89
  5. Step 5: Solve for x
    x = 64,873,720.89/8,847.90
  6. Step 6: Final answer
    x = 7,332.10

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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.