Home / 7,078.40-10,603.20-3,617.60

Finding the Fourth Proportional to 7,078.40, 10,603.20 and 3,617.60

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Solution

The fourth proportional to 7,078.40, 10,603.20 and 3,617.60 is: 5,419.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,078.40 : 10,603.20 = 3,617.60 : x
  2. Step 2: Convert to fraction form
    7,078.40/10,603.20 = 3,617.60/x
  3. Step 3: Cross multiply
    7,078.40x = 10,603.20 × 3,617.60
  4. Step 4: Simplify right side
    7,078.40x = 38,358,136.32
  5. Step 5: Solve for x
    x = 38,358,136.32/7,078.40
  6. Step 6: Final answer
    x = 5,419.04

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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.