Home / 1,175.19-1,620.20-975.27

Finding the Fourth Proportional to 1,175.19, 1,620.20 and 975.27

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Solution

The fourth proportional to 1,175.19, 1,620.20 and 975.27 is: 1,344.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,175.19 : 1,620.20 = 975.27 : x
  2. Step 2: Convert to fraction form
    1,175.19/1,620.20 = 975.27/x
  3. Step 3: Cross multiply
    1,175.19x = 1,620.20 × 975.27
  4. Step 4: Simplify right side
    1,175.19x = 1,580,132.45
  5. Step 5: Solve for x
    x = 1,580,132.45/1,175.19
  6. Step 6: Final answer
    x = 1,344.58

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1.5x scale

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.