Home / 1,173.50-1,621.01-1,090.47

Finding the Fourth Proportional to 1,173.50, 1,621.01 and 1,090.47

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Solution

The fourth proportional to 1,173.50, 1,621.01 and 1,090.47 is: 1,506.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.50 : 1,621.01 = 1,090.47 : x
  2. Step 2: Convert to fraction form
    1,173.50/1,621.01 = 1,090.47/x
  3. Step 3: Cross multiply
    1,173.50x = 1,621.01 × 1,090.47
  4. Step 4: Simplify right side
    1,173.50x = 1,767,671.58
  5. Step 5: Solve for x
    x = 1,767,671.58/1,173.50
  6. Step 6: Final answer
    x = 1,506.33

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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.