Home / 1,356.18-1,872.48-1,197.60

Finding the Fourth Proportional to 1,356.18, 1,872.48 and 1,197.60

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Solution

The fourth proportional to 1,356.18, 1,872.48 and 1,197.60 is: 1,653.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.18 : 1,872.48 = 1,197.60 : x
  2. Step 2: Convert to fraction form
    1,356.18/1,872.48 = 1,197.60/x
  3. Step 3: Cross multiply
    1,356.18x = 1,872.48 × 1,197.60
  4. Step 4: Simplify right side
    1,356.18x = 2,242,482.05
  5. Step 5: Solve for x
    x = 2,242,482.05/1,356.18
  6. Step 6: Final answer
    x = 1,653.53

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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.