Home / 1,680.96-2,318.40-1,090.47

Finding the Fourth Proportional to 1,680.96, 2,318.40 and 1,090.47

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Solution

The fourth proportional to 1,680.96, 2,318.40 and 1,090.47 is: 1,503.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.96 : 2,318.40 = 1,090.47 : x
  2. Step 2: Convert to fraction form
    1,680.96/2,318.40 = 1,090.47/x
  3. Step 3: Cross multiply
    1,680.96x = 2,318.40 × 1,090.47
  4. Step 4: Simplify right side
    1,680.96x = 2,528,145.65
  5. Step 5: Solve for x
    x = 2,528,145.65/1,680.96
  6. Step 6: Final answer
    x = 1,503.99

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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.