Home / 2,870.17-4,305.87-923.74

Finding the Fourth Proportional to 2,870.17, 4,305.87 and 923.74

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Solution

The fourth proportional to 2,870.17, 4,305.87 and 923.74 is: 1,385.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.17 : 4,305.87 = 923.74 : x
  2. Step 2: Convert to fraction form
    2,870.17/4,305.87 = 923.74/x
  3. Step 3: Cross multiply
    2,870.17x = 4,305.87 × 923.74
  4. Step 4: Simplify right side
    2,870.17x = 3,977,504.35
  5. Step 5: Solve for x
    x = 3,977,504.35/2,870.17
  6. Step 6: Final answer
    x = 1,385.81

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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.