Home / 2,615.16-3,607.56-2,118.36

Finding the Fourth Proportional to 2,615.16, 3,607.56 and 2,118.36

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Solution

The fourth proportional to 2,615.16, 3,607.56 and 2,118.36 is: 2,922.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.16 : 3,607.56 = 2,118.36 : x
  2. Step 2: Convert to fraction form
    2,615.16/3,607.56 = 2,118.36/x
  3. Step 3: Cross multiply
    2,615.16x = 3,607.56 × 2,118.36
  4. Step 4: Simplify right side
    2,615.16x = 7,642,110.80
  5. Step 5: Solve for x
    x = 7,642,110.80/2,615.16
  6. Step 6: Final answer
    x = 2,922.23

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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.