Home / 7,140.42-10,709.28-2,209.86

Finding the Fourth Proportional to 7,140.42, 10,709.28 and 2,209.86

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Solution

The fourth proportional to 7,140.42, 10,709.28 and 2,209.86 is: 3,314.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.42 : 10,709.28 = 2,209.86 : x
  2. Step 2: Convert to fraction form
    7,140.42/10,709.28 = 2,209.86/x
  3. Step 3: Cross multiply
    7,140.42x = 10,709.28 × 2,209.86
  4. Step 4: Simplify right side
    7,140.42x = 23,666,009.50
  5. Step 5: Solve for x
    x = 23,666,009.50/7,140.42
  6. Step 6: Final answer
    x = 3,314.37

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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.