Home / 2,615.36-3,607.20-2,172.16

Finding the Fourth Proportional to 2,615.36, 3,607.20 and 2,172.16

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Solution

The fourth proportional to 2,615.36, 3,607.20 and 2,172.16 is: 2,995.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.36 : 3,607.20 = 2,172.16 : x
  2. Step 2: Convert to fraction form
    2,615.36/3,607.20 = 2,172.16/x
  3. Step 3: Cross multiply
    2,615.36x = 3,607.20 × 2,172.16
  4. Step 4: Simplify right side
    2,615.36x = 7,835,415.55
  5. Step 5: Solve for x
    x = 7,835,415.55/2,615.36
  6. Step 6: Final answer
    x = 2,995.92

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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.