Home / 2,578.02-3,557.66-1,399.10

Finding the Fourth Proportional to 2,578.02, 3,557.66 and 1,399.10

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Solution

The fourth proportional to 2,578.02, 3,557.66 and 1,399.10 is: 1,930.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.02 : 3,557.66 = 1,399.10 : x
  2. Step 2: Convert to fraction form
    2,578.02/3,557.66 = 1,399.10/x
  3. Step 3: Cross multiply
    2,578.02x = 3,557.66 × 1,399.10
  4. Step 4: Simplify right side
    2,578.02x = 4,977,497.32
  5. Step 5: Solve for x
    x = 4,977,497.32/2,578.02
  6. Step 6: Final answer
    x = 1,930.74

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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.