Home / 1,557.15-2,335.72-1,068.72

Finding the Fourth Proportional to 1,557.15, 2,335.72 and 1,068.72

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Solution

The fourth proportional to 1,557.15, 2,335.72 and 1,068.72 is: 1,603.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.15 : 2,335.72 = 1,068.72 : x
  2. Step 2: Convert to fraction form
    1,557.15/2,335.72 = 1,068.72/x
  3. Step 3: Cross multiply
    1,557.15x = 2,335.72 × 1,068.72
  4. Step 4: Simplify right side
    1,557.15x = 2,496,230.68
  5. Step 5: Solve for x
    x = 2,496,230.68/1,557.15
  6. Step 6: Final answer
    x = 1,603.08

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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.