Home / 1,099.26-1,639.89-1,066.08

Finding the Fourth Proportional to 1,099.26, 1,639.89 and 1,066.08

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Solution

The fourth proportional to 1,099.26, 1,639.89 and 1,066.08 is: 1,590.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.26 : 1,639.89 = 1,066.08 : x
  2. Step 2: Convert to fraction form
    1,099.26/1,639.89 = 1,066.08/x
  3. Step 3: Cross multiply
    1,099.26x = 1,639.89 × 1,066.08
  4. Step 4: Simplify right side
    1,099.26x = 1,748,253.93
  5. Step 5: Solve for x
    x = 1,748,253.93/1,099.26
  6. Step 6: Final answer
    x = 1,590.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.