Home / 2,115.16-2,918.64-1,230.82

Finding the Fourth Proportional to 2,115.16, 2,918.64 and 1,230.82

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Solution

The fourth proportional to 2,115.16, 2,918.64 and 1,230.82 is: 1,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.16 : 2,918.64 = 1,230.82 : x
  2. Step 2: Convert to fraction form
    2,115.16/2,918.64 = 1,230.82/x
  3. Step 3: Cross multiply
    2,115.16x = 2,918.64 × 1,230.82
  4. Step 4: Simplify right side
    2,115.16x = 3,592,320.48
  5. Step 5: Solve for x
    x = 3,592,320.48/2,115.16
  6. Step 6: Final answer
    x = 1,698.37

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1.5x scale

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.