Home / 1,316.58-1,816.20-1,068.18

Finding the Fourth Proportional to 1,316.58, 1,816.20 and 1,068.18

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Solution

The fourth proportional to 1,316.58, 1,816.20 and 1,068.18 is: 1,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.58 : 1,816.20 = 1,068.18 : x
  2. Step 2: Convert to fraction form
    1,316.58/1,816.20 = 1,068.18/x
  3. Step 3: Cross multiply
    1,316.58x = 1,816.20 × 1,068.18
  4. Step 4: Simplify right side
    1,316.58x = 1,940,028.52
  5. Step 5: Solve for x
    x = 1,940,028.52/1,316.58
  6. Step 6: Final answer
    x = 1,473.54

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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.