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Finding the Fourth Proportional to 7,842.29, 10,822.30 and 4,305.42

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Solution

The fourth proportional to 7,842.29, 10,822.30 and 4,305.42 is: 5,941.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.29 : 10,822.30 = 4,305.42 : x
  2. Step 2: Convert to fraction form
    7,842.29/10,822.30 = 4,305.42/x
  3. Step 3: Cross multiply
    7,842.29x = 10,822.30 × 4,305.42
  4. Step 4: Simplify right side
    7,842.29x = 46,594,536.10
  5. Step 5: Solve for x
    x = 46,594,536.10/7,842.29
  6. Step 6: Final answer
    x = 5,941.45

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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.