Home / 2,210.49-3,050.47-1,215.78

Finding the Fourth Proportional to 2,210.49, 3,050.47 and 1,215.78

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Solution

The fourth proportional to 2,210.49, 3,050.47 and 1,215.78 is: 1,677.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.49 : 3,050.47 = 1,215.78 : x
  2. Step 2: Convert to fraction form
    2,210.49/3,050.47 = 1,215.78/x
  3. Step 3: Cross multiply
    2,210.49x = 3,050.47 × 1,215.78
  4. Step 4: Simplify right side
    2,210.49x = 3,708,700.42
  5. Step 5: Solve for x
    x = 3,708,700.42/2,210.49
  6. Step 6: Final answer
    x = 1,677.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.