Home / 1,664.93-2,297.45-918.81

Finding the Fourth Proportional to 1,664.93, 2,297.45 and 918.81

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Solution

The fourth proportional to 1,664.93, 2,297.45 and 918.81 is: 1,267.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.93 : 2,297.45 = 918.81 : x
  2. Step 2: Convert to fraction form
    1,664.93/2,297.45 = 918.81/x
  3. Step 3: Cross multiply
    1,664.93x = 2,297.45 × 918.81
  4. Step 4: Simplify right side
    1,664.93x = 2,110,922.33
  5. Step 5: Solve for x
    x = 2,110,922.33/1,664.93
  6. Step 6: Final answer
    x = 1,267.87

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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.