Home / 1,349.36-1,858.20-1,172.24

Finding the Fourth Proportional to 1,349.36, 1,858.20 and 1,172.24

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Solution

The fourth proportional to 1,349.36, 1,858.20 and 1,172.24 is: 1,614.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,349.36 : 1,858.20 = 1,172.24 : x
  2. Step 2: Convert to fraction form
    1,349.36/1,858.20 = 1,172.24/x
  3. Step 3: Cross multiply
    1,349.36x = 1,858.20 × 1,172.24
  4. Step 4: Simplify right side
    1,349.36x = 2,178,256.37
  5. Step 5: Solve for x
    x = 2,178,256.37/1,349.36
  6. Step 6: Final answer
    x = 1,614.29

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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.