Home / 1,435.04-1,979.62-1,207.84

Finding the Fourth Proportional to 1,435.04, 1,979.62 and 1,207.84

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Solution

The fourth proportional to 1,435.04, 1,979.62 and 1,207.84 is: 1,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435.04 : 1,979.62 = 1,207.84 : x
  2. Step 2: Convert to fraction form
    1,435.04/1,979.62 = 1,207.84/x
  3. Step 3: Cross multiply
    1,435.04x = 1,979.62 × 1,207.84
  4. Step 4: Simplify right side
    1,435.04x = 2,391,064.22
  5. Step 5: Solve for x
    x = 2,391,064.22/1,435.04
  6. Step 6: Final answer
    x = 1,666.20

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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.