Home / 2,870.19-4,305.39-790.36

Finding the Fourth Proportional to 2,870.19, 4,305.39 and 790.36

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Solution

The fourth proportional to 2,870.19, 4,305.39 and 790.36 is: 1,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.19 : 4,305.39 = 790.36 : x
  2. Step 2: Convert to fraction form
    2,870.19/4,305.39 = 790.36/x
  3. Step 3: Cross multiply
    2,870.19x = 4,305.39 × 790.36
  4. Step 4: Simplify right side
    2,870.19x = 3,402,800.98
  5. Step 5: Solve for x
    x = 3,402,800.98/2,870.19
  6. Step 6: Final answer
    x = 1,185.57

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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.