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Finding the Fourth Proportional to 3,462.83, 4,779 and 1,970.42

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Solution

The fourth proportional to 3,462.83, 4,779 and 1,970.42 is: 2,719.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,462.83 : 4,779 = 1,970.42 : x
  2. Step 2: Convert to fraction form
    3,462.83/4,779 = 1,970.42/x
  3. Step 3: Cross multiply
    3,462.83x = 4,779 × 1,970.42
  4. Step 4: Simplify right side
    3,462.83x = 9,416,649.13
  5. Step 5: Solve for x
    x = 9,416,649.13/3,462.83
  6. Step 6: Final answer
    x = 2,719.35

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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.