Home / 1,678.47-2,317.67-1,090.01

Finding the Fourth Proportional to 1,678.47, 2,317.67 and 1,090.01

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Solution

The fourth proportional to 1,678.47, 2,317.67 and 1,090.01 is: 1,505.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678.47 : 2,317.67 = 1,090.01 : x
  2. Step 2: Convert to fraction form
    1,678.47/2,317.67 = 1,090.01/x
  3. Step 3: Cross multiply
    1,678.47x = 2,317.67 × 1,090.01
  4. Step 4: Simplify right side
    1,678.47x = 2,526,283.48
  5. Step 5: Solve for x
    x = 2,526,283.48/1,678.47
  6. Step 6: Final answer
    x = 1,505.11

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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.