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Finding the Fourth Proportional to 1,210.11, 1,816.08 and 886.32

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Solution

The fourth proportional to 1,210.11, 1,816.08 and 886.32 is: 1,330.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.11 : 1,816.08 = 886.32 : x
  2. Step 2: Convert to fraction form
    1,210.11/1,816.08 = 886.32/x
  3. Step 3: Cross multiply
    1,210.11x = 1,816.08 × 886.32
  4. Step 4: Simplify right side
    1,210.11x = 1,609,628.03
  5. Step 5: Solve for x
    x = 1,609,628.03/1,210.11
  6. Step 6: Final answer
    x = 1,330.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.