Home / 1,341.60-1,852.26-921.81

Finding the Fourth Proportional to 1,341.60, 1,852.26 and 921.81

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Solution

The fourth proportional to 1,341.60, 1,852.26 and 921.81 is: 1,272.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,341.60 : 1,852.26 = 921.81 : x
  2. Step 2: Convert to fraction form
    1,341.60/1,852.26 = 921.81/x
  3. Step 3: Cross multiply
    1,341.60x = 1,852.26 × 921.81
  4. Step 4: Simplify right side
    1,341.60x = 1,707,431.79
  5. Step 5: Solve for x
    x = 1,707,431.79/1,341.60
  6. Step 6: Final answer
    x = 1,272.68

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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.