Home / 7,140.35-10,707.89-2,459.07

Finding the Fourth Proportional to 7,140.35, 10,707.89 and 2,459.07

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Solution

The fourth proportional to 7,140.35, 10,707.89 and 2,459.07 is: 3,687.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.35 : 10,707.89 = 2,459.07 : x
  2. Step 2: Convert to fraction form
    7,140.35/10,707.89 = 2,459.07/x
  3. Step 3: Cross multiply
    7,140.35x = 10,707.89 × 2,459.07
  4. Step 4: Simplify right side
    7,140.35x = 26,331,438.77
  5. Step 5: Solve for x
    x = 26,331,438.77/7,140.35
  6. Step 6: Final answer
    x = 3,687.69

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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.