Home / 7,140.16-10,703.68-3,189.32

Finding the Fourth Proportional to 7,140.16, 10,703.68 and 3,189.32

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Solution

The fourth proportional to 7,140.16, 10,703.68 and 3,189.32 is: 4,781.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.16 : 10,703.68 = 3,189.32 : x
  2. Step 2: Convert to fraction form
    7,140.16/10,703.68 = 3,189.32/x
  3. Step 3: Cross multiply
    7,140.16x = 10,703.68 × 3,189.32
  4. Step 4: Simplify right side
    7,140.16x = 34,137,460.70
  5. Step 5: Solve for x
    x = 34,137,460.70/7,140.16
  6. Step 6: Final answer
    x = 4,781.05

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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.