Home / 1,051.26-1,578.87-1,005.18

Finding the Fourth Proportional to 1,051.26, 1,578.87 and 1,005.18

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Solution

The fourth proportional to 1,051.26, 1,578.87 and 1,005.18 is: 1,509.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,051.26 : 1,578.87 = 1,005.18 : x
  2. Step 2: Convert to fraction form
    1,051.26/1,578.87 = 1,005.18/x
  3. Step 3: Cross multiply
    1,051.26x = 1,578.87 × 1,005.18
  4. Step 4: Simplify right side
    1,051.26x = 1,587,048.55
  5. Step 5: Solve for x
    x = 1,587,048.55/1,051.26
  6. Step 6: Final answer
    x = 1,509.66

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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.