Home / 2,642.80-3,637.56-2,491.60

Finding the Fourth Proportional to 2,642.80, 3,637.56 and 2,491.60

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Solution

The fourth proportional to 2,642.80, 3,637.56 and 2,491.60 is: 3,429.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.80 : 3,637.56 = 2,491.60 : x
  2. Step 2: Convert to fraction form
    2,642.80/3,637.56 = 2,491.60/x
  3. Step 3: Cross multiply
    2,642.80x = 3,637.56 × 2,491.60
  4. Step 4: Simplify right side
    2,642.80x = 9,063,344.50
  5. Step 5: Solve for x
    x = 9,063,344.50/2,642.80
  6. Step 6: Final answer
    x = 3,429.45

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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.