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Finding the Fourth Proportional to 3,347.93, 4,620.42 and 1,856.31

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Solution

The fourth proportional to 3,347.93, 4,620.42 and 1,856.31 is: 2,561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.93 : 4,620.42 = 1,856.31 : x
  2. Step 2: Convert to fraction form
    3,347.93/4,620.42 = 1,856.31/x
  3. Step 3: Cross multiply
    3,347.93x = 4,620.42 × 1,856.31
  4. Step 4: Simplify right side
    3,347.93x = 8,576,931.85
  5. Step 5: Solve for x
    x = 8,576,931.85/3,347.93
  6. Step 6: Final answer
    x = 2,561.86

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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.