Home / 2,620.02-3,928.80-1,058.76

Finding the Fourth Proportional to 2,620.02, 3,928.80 and 1,058.76

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Solution

The fourth proportional to 2,620.02, 3,928.80 and 1,058.76 is: 1,587.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.02 : 3,928.80 = 1,058.76 : x
  2. Step 2: Convert to fraction form
    2,620.02/3,928.80 = 1,058.76/x
  3. Step 3: Cross multiply
    2,620.02x = 3,928.80 × 1,058.76
  4. Step 4: Simplify right side
    2,620.02x = 4,159,656.29
  5. Step 5: Solve for x
    x = 4,159,656.29/2,620.02
  6. Step 6: Final answer
    x = 1,587.64

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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.