Home / 1,029.84-1,421.07-587.70

Finding the Fourth Proportional to 1,029.84, 1,421.07 and 587.70

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Solution

The fourth proportional to 1,029.84, 1,421.07 and 587.70 is: 810.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,029.84 : 1,421.07 = 587.70 : x
  2. Step 2: Convert to fraction form
    1,029.84/1,421.07 = 587.70/x
  3. Step 3: Cross multiply
    1,029.84x = 1,421.07 × 587.70
  4. Step 4: Simplify right side
    1,029.84x = 835,162.84
  5. Step 5: Solve for x
    x = 835,162.84/1,029.84
  6. Step 6: Final answer
    x = 810.96

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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.