Home / 1,637.36-2,454.62-815.22

Finding the Fourth Proportional to 1,637.36, 2,454.62 and 815.22

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Solution

The fourth proportional to 1,637.36, 2,454.62 and 815.22 is: 1,222.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,637.36 : 2,454.62 = 815.22 : x
  2. Step 2: Convert to fraction form
    1,637.36/2,454.62 = 815.22/x
  3. Step 3: Cross multiply
    1,637.36x = 2,454.62 × 815.22
  4. Step 4: Simplify right side
    1,637.36x = 2,001,055.32
  5. Step 5: Solve for x
    x = 2,001,055.32/1,637.36
  6. Step 6: Final answer
    x = 1,222.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.