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Finding the Fourth Proportional to 8,370.79, 12,547.42 and 2,822.22

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Solution

The fourth proportional to 8,370.79, 12,547.42 and 2,822.22 is: 4,230.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,370.79 : 12,547.42 = 2,822.22 : x
  2. Step 2: Convert to fraction form
    8,370.79/12,547.42 = 2,822.22/x
  3. Step 3: Cross multiply
    8,370.79x = 12,547.42 × 2,822.22
  4. Step 4: Simplify right side
    8,370.79x = 35,411,572.62
  5. Step 5: Solve for x
    x = 35,411,572.62/8,370.79
  6. Step 6: Final answer
    x = 4,230.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.