Home / 3,915.30-5,873.68-1,318.18

Finding the Fourth Proportional to 3,915.30, 5,873.68 and 1,318.18

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Solution

The fourth proportional to 3,915.30, 5,873.68 and 1,318.18 is: 1,977.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.30 : 5,873.68 = 1,318.18 : x
  2. Step 2: Convert to fraction form
    3,915.30/5,873.68 = 1,318.18/x
  3. Step 3: Cross multiply
    3,915.30x = 5,873.68 × 1,318.18
  4. Step 4: Simplify right side
    3,915.30x = 7,742,567.50
  5. Step 5: Solve for x
    x = 7,742,567.50/3,915.30
  6. Step 6: Final answer
    x = 1,977.52

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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.