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Finding the Fourth Proportional to 4,309.92, 5,947.56 and 2,421.51

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Solution

The fourth proportional to 4,309.92, 5,947.56 and 2,421.51 is: 3,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,309.92 : 5,947.56 = 2,421.51 : x
  2. Step 2: Convert to fraction form
    4,309.92/5,947.56 = 2,421.51/x
  3. Step 3: Cross multiply
    4,309.92x = 5,947.56 × 2,421.51
  4. Step 4: Simplify right side
    4,309.92x = 14,402,076.02
  5. Step 5: Solve for x
    x = 14,402,076.02/4,309.92
  6. Step 6: Final answer
    x = 3,341.61

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Double scale
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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.