Home / 5,187.60-7,158.90-2,829.72

Finding the Fourth Proportional to 5,187.60, 7,158.90 and 2,829.72

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Solution

The fourth proportional to 5,187.60, 7,158.90 and 2,829.72 is: 3,905.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.60 : 7,158.90 = 2,829.72 : x
  2. Step 2: Convert to fraction form
    5,187.60/7,158.90 = 2,829.72/x
  3. Step 3: Cross multiply
    5,187.60x = 7,158.90 × 2,829.72
  4. Step 4: Simplify right side
    5,187.60x = 20,257,682.51
  5. Step 5: Solve for x
    x = 20,257,682.51/5,187.60
  6. Step 6: Final answer
    x = 3,905.02

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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.