Home / 7,140.35-10,708.47-2,756.84

Finding the Fourth Proportional to 7,140.35, 10,708.47 and 2,756.84

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Solution

The fourth proportional to 7,140.35, 10,708.47 and 2,756.84 is: 4,134.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.35 : 10,708.47 = 2,756.84 : x
  2. Step 2: Convert to fraction form
    7,140.35/10,708.47 = 2,756.84/x
  3. Step 3: Cross multiply
    7,140.35x = 10,708.47 × 2,756.84
  4. Step 4: Simplify right side
    7,140.35x = 29,521,484.89
  5. Step 5: Solve for x
    x = 29,521,484.89/7,140.35
  6. Step 6: Final answer
    x = 4,134.46

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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.