Home / 2,890.16-3,987.16-1,695.28

Finding the Fourth Proportional to 2,890.16, 3,987.16 and 1,695.28

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Solution

The fourth proportional to 2,890.16, 3,987.16 and 1,695.28 is: 2,338.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.16 : 3,987.16 = 1,695.28 : x
  2. Step 2: Convert to fraction form
    2,890.16/3,987.16 = 1,695.28/x
  3. Step 3: Cross multiply
    2,890.16x = 3,987.16 × 1,695.28
  4. Step 4: Simplify right side
    2,890.16x = 6,759,352.60
  5. Step 5: Solve for x
    x = 6,759,352.60/2,890.16
  6. Step 6: Final answer
    x = 2,338.75

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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.