Home / 2,163.15-2,985.06-1,219.10

Finding the Fourth Proportional to 2,163.15, 2,985.06 and 1,219.10

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Solution

The fourth proportional to 2,163.15, 2,985.06 and 1,219.10 is: 1,682.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.15 : 2,985.06 = 1,219.10 : x
  2. Step 2: Convert to fraction form
    2,163.15/2,985.06 = 1,219.10/x
  3. Step 3: Cross multiply
    2,163.15x = 2,985.06 × 1,219.10
  4. Step 4: Simplify right side
    2,163.15x = 3,639,071.72
  5. Step 5: Solve for x
    x = 3,639,071.72/2,163.15
  6. Step 6: Final answer
    x = 1,682.30

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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.