Home / 1,580.05-2,180.14-1,207.45

Finding the Fourth Proportional to 1,580.05, 2,180.14 and 1,207.45

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Solution

The fourth proportional to 1,580.05, 2,180.14 and 1,207.45 is: 1,666.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.05 : 2,180.14 = 1,207.45 : x
  2. Step 2: Convert to fraction form
    1,580.05/2,180.14 = 1,207.45/x
  3. Step 3: Cross multiply
    1,580.05x = 2,180.14 × 1,207.45
  4. Step 4: Simplify right side
    1,580.05x = 2,632,410.04
  5. Step 5: Solve for x
    x = 2,632,410.04/1,580.05
  6. Step 6: Final answer
    x = 1,666.03

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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.