Home / 5,679.04-8,518.60-5,431.20

Finding the Fourth Proportional to 5,679.04, 8,518.60 and 5,431.20

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Solution

The fourth proportional to 5,679.04, 8,518.60 and 5,431.20 is: 8,146.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,679.04 : 8,518.60 = 5,431.20 : x
  2. Step 2: Convert to fraction form
    5,679.04/8,518.60 = 5,431.20/x
  3. Step 3: Cross multiply
    5,679.04x = 8,518.60 × 5,431.20
  4. Step 4: Simplify right side
    5,679.04x = 46,266,220.32
  5. Step 5: Solve for x
    x = 46,266,220.32/5,679.04
  6. Step 6: Final answer
    x = 8,146.84

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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.