Home / 2,701.78-4,053.06-1,315.20

Finding the Fourth Proportional to 2,701.78, 4,053.06 and 1,315.20

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Solution

The fourth proportional to 2,701.78, 4,053.06 and 1,315.20 is: 1,972.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,701.78 : 4,053.06 = 1,315.20 : x
  2. Step 2: Convert to fraction form
    2,701.78/4,053.06 = 1,315.20/x
  3. Step 3: Cross multiply
    2,701.78x = 4,053.06 × 1,315.20
  4. Step 4: Simplify right side
    2,701.78x = 5,330,584.51
  5. Step 5: Solve for x
    x = 5,330,584.51/2,701.78
  6. Step 6: Final answer
    x = 1,972.99

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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.