Home / 1,587.69-2,378.66-1,172.25

Finding the Fourth Proportional to 1,587.69, 2,378.66 and 1,172.25

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Solution

The fourth proportional to 1,587.69, 2,378.66 and 1,172.25 is: 1,756.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587.69 : 2,378.66 = 1,172.25 : x
  2. Step 2: Convert to fraction form
    1,587.69/2,378.66 = 1,172.25/x
  3. Step 3: Cross multiply
    1,587.69x = 2,378.66 × 1,172.25
  4. Step 4: Simplify right side
    1,587.69x = 2,788,378.32
  5. Step 5: Solve for x
    x = 2,788,378.32/1,587.69
  6. Step 6: Final answer
    x = 1,756.25

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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.