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Finding the Fourth Proportional to 4,899.32, 7,346.56 and 1,779.20

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Solution

The fourth proportional to 4,899.32, 7,346.56 and 1,779.20 is: 2,667.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.32 : 7,346.56 = 1,779.20 : x
  2. Step 2: Convert to fraction form
    4,899.32/7,346.56 = 1,779.20/x
  3. Step 3: Cross multiply
    4,899.32x = 7,346.56 × 1,779.20
  4. Step 4: Simplify right side
    4,899.32x = 13,070,999.55
  5. Step 5: Solve for x
    x = 13,070,999.55/4,899.32
  6. Step 6: Final answer
    x = 2,667.92

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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.