Home / 1,475.13-2,035.79-812.01

Finding the Fourth Proportional to 1,475.13, 2,035.79 and 812.01

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Solution

The fourth proportional to 1,475.13, 2,035.79 and 812.01 is: 1,120.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,475.13 : 2,035.79 = 812.01 : x
  2. Step 2: Convert to fraction form
    1,475.13/2,035.79 = 812.01/x
  3. Step 3: Cross multiply
    1,475.13x = 2,035.79 × 812.01
  4. Step 4: Simplify right side
    1,475.13x = 1,653,081.84
  5. Step 5: Solve for x
    x = 1,653,081.84/1,475.13
  6. Step 6: Final answer
    x = 1,120.63

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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.