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Finding the Fourth Proportional to 1,356.92, 1,873.06 and 914.68

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Solution

The fourth proportional to 1,356.92, 1,873.06 and 914.68 is: 1,262.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356.92 : 1,873.06 = 914.68 : x
  2. Step 2: Convert to fraction form
    1,356.92/1,873.06 = 914.68/x
  3. Step 3: Cross multiply
    1,356.92x = 1,873.06 × 914.68
  4. Step 4: Simplify right side
    1,356.92x = 1,713,250.52
  5. Step 5: Solve for x
    x = 1,713,250.52/1,356.92
  6. Step 6: Final answer
    x = 1,262.60

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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.