Home / 2,130.24-3,187.14-2,124.78

Finding the Fourth Proportional to 2,130.24, 3,187.14 and 2,124.78

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Solution

The fourth proportional to 2,130.24, 3,187.14 and 2,124.78 is: 3,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.24 : 3,187.14 = 2,124.78 : x
  2. Step 2: Convert to fraction form
    2,130.24/3,187.14 = 2,124.78/x
  3. Step 3: Cross multiply
    2,130.24x = 3,187.14 × 2,124.78
  4. Step 4: Simplify right side
    2,130.24x = 6,771,971.33
  5. Step 5: Solve for x
    x = 6,771,971.33/2,130.24
  6. Step 6: Final answer
    x = 3,178.97

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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.