Home / 5,320.60-7,980.26-1,425.32

Finding the Fourth Proportional to 5,320.60, 7,980.26 and 1,425.32

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Solution

The fourth proportional to 5,320.60, 7,980.26 and 1,425.32 is: 2,137.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320.60 : 7,980.26 = 1,425.32 : x
  2. Step 2: Convert to fraction form
    5,320.60/7,980.26 = 1,425.32/x
  3. Step 3: Cross multiply
    5,320.60x = 7,980.26 × 1,425.32
  4. Step 4: Simplify right side
    5,320.60x = 11,374,424.18
  5. Step 5: Solve for x
    x = 11,374,424.18/5,320.60
  6. Step 6: Final answer
    x = 2,137.81

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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.