Home / 4,612.12-6,918-1,325.20

Finding the Fourth Proportional to 4,612.12, 6,918 and 1,325.20

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Solution

The fourth proportional to 4,612.12, 6,918 and 1,325.20 is: 1,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,612.12 : 6,918 = 1,325.20 : x
  2. Step 2: Convert to fraction form
    4,612.12/6,918 = 1,325.20/x
  3. Step 3: Cross multiply
    4,612.12x = 6,918 × 1,325.20
  4. Step 4: Simplify right side
    4,612.12x = 9,167,733.60
  5. Step 5: Solve for x
    x = 9,167,733.60/4,612.12
  6. Step 6: Final answer
    x = 1,987.75

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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.