Home / 5,459.60-8,199.30-4,779.20

Finding the Fourth Proportional to 5,459.60, 8,199.30 and 4,779.20

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Solution

The fourth proportional to 5,459.60, 8,199.30 and 4,779.20 is: 7,177.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,459.60 : 8,199.30 = 4,779.20 : x
  2. Step 2: Convert to fraction form
    5,459.60/8,199.30 = 4,779.20/x
  3. Step 3: Cross multiply
    5,459.60x = 8,199.30 × 4,779.20
  4. Step 4: Simplify right side
    5,459.60x = 39,186,094.56
  5. Step 5: Solve for x
    x = 39,186,094.56/5,459.60
  6. Step 6: Final answer
    x = 7,177.47

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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.