Home / 2,860.12-4,290.78-1,011.16

Finding the Fourth Proportional to 2,860.12, 4,290.78 and 1,011.16

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Solution

The fourth proportional to 2,860.12, 4,290.78 and 1,011.16 is: 1,516.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.12 : 4,290.78 = 1,011.16 : x
  2. Step 2: Convert to fraction form
    2,860.12/4,290.78 = 1,011.16/x
  3. Step 3: Cross multiply
    2,860.12x = 4,290.78 × 1,011.16
  4. Step 4: Simplify right side
    2,860.12x = 4,338,665.10
  5. Step 5: Solve for x
    x = 4,338,665.10/2,860.12
  6. Step 6: Final answer
    x = 1,516.95

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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.