Home / 2,385.07-3,291.77-1,390.93

Finding the Fourth Proportional to 2,385.07, 3,291.77 and 1,390.93

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Solution

The fourth proportional to 2,385.07, 3,291.77 and 1,390.93 is: 1,919.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.07 : 3,291.77 = 1,390.93 : x
  2. Step 2: Convert to fraction form
    2,385.07/3,291.77 = 1,390.93/x
  3. Step 3: Cross multiply
    2,385.07x = 3,291.77 × 1,390.93
  4. Step 4: Simplify right side
    2,385.07x = 4,578,621.65
  5. Step 5: Solve for x
    x = 4,578,621.65/2,385.07
  6. Step 6: Final answer
    x = 1,919.70

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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.