Home / 7,139.08-10,709.64-2,209.10

Finding the Fourth Proportional to 7,139.08, 10,709.64 and 2,209.10

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Solution

The fourth proportional to 7,139.08, 10,709.64 and 2,209.10 is: 3,313.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,139.08 : 10,709.64 = 2,209.10 : x
  2. Step 2: Convert to fraction form
    7,139.08/10,709.64 = 2,209.10/x
  3. Step 3: Cross multiply
    7,139.08x = 10,709.64 × 2,209.10
  4. Step 4: Simplify right side
    7,139.08x = 23,658,612.18
  5. Step 5: Solve for x
    x = 23,658,612.18/7,139.08
  6. Step 6: Final answer
    x = 3,313.96

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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.