Home / 1,353.81-1,867.05-1,055.13

Finding the Fourth Proportional to 1,353.81, 1,867.05 and 1,055.13

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Solution

The fourth proportional to 1,353.81, 1,867.05 and 1,055.13 is: 1,455.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.81 : 1,867.05 = 1,055.13 : x
  2. Step 2: Convert to fraction form
    1,353.81/1,867.05 = 1,055.13/x
  3. Step 3: Cross multiply
    1,353.81x = 1,867.05 × 1,055.13
  4. Step 4: Simplify right side
    1,353.81x = 1,969,980.47
  5. Step 5: Solve for x
    x = 1,969,980.47/1,353.81
  6. Step 6: Final answer
    x = 1,455.14

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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.