Home / 1,559.14-2,151.60-860.50

Finding the Fourth Proportional to 1,559.14, 2,151.60 and 860.50

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Solution

The fourth proportional to 1,559.14, 2,151.60 and 860.50 is: 1,187.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.14 : 2,151.60 = 860.50 : x
  2. Step 2: Convert to fraction form
    1,559.14/2,151.60 = 860.50/x
  3. Step 3: Cross multiply
    1,559.14x = 2,151.60 × 860.50
  4. Step 4: Simplify right side
    1,559.14x = 1,851,451.80
  5. Step 5: Solve for x
    x = 1,851,451.80/1,559.14
  6. Step 6: Final answer
    x = 1,187.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.