Home / 2,576.95-3,864.73-1,278.07

Finding the Fourth Proportional to 2,576.95, 3,864.73 and 1,278.07

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Solution

The fourth proportional to 2,576.95, 3,864.73 and 1,278.07 is: 1,916.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,576.95 : 3,864.73 = 1,278.07 : x
  2. Step 2: Convert to fraction form
    2,576.95/3,864.73 = 1,278.07/x
  3. Step 3: Cross multiply
    2,576.95x = 3,864.73 × 1,278.07
  4. Step 4: Simplify right side
    2,576.95x = 4,939,395.47
  5. Step 5: Solve for x
    x = 4,939,395.47/2,576.95
  6. Step 6: Final answer
    x = 1,916.76

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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.