Home / 5,325.32-7,988.40-1,429.64

Finding the Fourth Proportional to 5,325.32, 7,988.40 and 1,429.64

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Solution

The fourth proportional to 5,325.32, 7,988.40 and 1,429.64 is: 2,144.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,325.32 : 7,988.40 = 1,429.64 : x
  2. Step 2: Convert to fraction form
    5,325.32/7,988.40 = 1,429.64/x
  3. Step 3: Cross multiply
    5,325.32x = 7,988.40 × 1,429.64
  4. Step 4: Simplify right side
    5,325.32x = 11,420,536.18
  5. Step 5: Solve for x
    x = 11,420,536.18/5,325.32
  6. Step 6: Final answer
    x = 2,144.57

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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.