Home / 1,085.11-1,629-1,030.64

Finding the Fourth Proportional to 1,085.11, 1,629 and 1,030.64

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Solution

The fourth proportional to 1,085.11, 1,629 and 1,030.64 is: 1,547.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,085.11 : 1,629 = 1,030.64 : x
  2. Step 2: Convert to fraction form
    1,085.11/1,629 = 1,030.64/x
  3. Step 3: Cross multiply
    1,085.11x = 1,629 × 1,030.64
  4. Step 4: Simplify right side
    1,085.11x = 1,678,904.42
  5. Step 5: Solve for x
    x = 1,678,904.42/1,085.11
  6. Step 6: Final answer
    x = 1,547.22

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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.