Home / 7,140.84-10,709.82-2,758.92

Finding the Fourth Proportional to 7,140.84, 10,709.82 and 2,758.92

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Solution

The fourth proportional to 7,140.84, 10,709.82 and 2,758.92 is: 4,137.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,140.84 : 10,709.82 = 2,758.92 : x
  2. Step 2: Convert to fraction form
    7,140.84/10,709.82 = 2,758.92/x
  3. Step 3: Cross multiply
    7,140.84x = 10,709.82 × 2,758.92
  4. Step 4: Simplify right side
    7,140.84x = 29,547,536.59
  5. Step 5: Solve for x
    x = 29,547,536.59/7,140.84
  6. Step 6: Final answer
    x = 4,137.82

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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.