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Finding the Fourth Proportional to 5,698.40, 8,552.40 and 2,779.20

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Solution

The fourth proportional to 5,698.40, 8,552.40 and 2,779.20 is: 4,171.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,698.40 : 8,552.40 = 2,779.20 : x
  2. Step 2: Convert to fraction form
    5,698.40/8,552.40 = 2,779.20/x
  3. Step 3: Cross multiply
    5,698.40x = 8,552.40 × 2,779.20
  4. Step 4: Simplify right side
    5,698.40x = 23,768,830.08
  5. Step 5: Solve for x
    x = 23,768,830.08/5,698.40
  6. Step 6: Final answer
    x = 4,171.14

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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.