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Finding the Fourth Proportional to 1,407.93, 2,112.30 and 586.59

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Solution

The fourth proportional to 1,407.93, 2,112.30 and 586.59 is: 880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,407.93 : 2,112.30 = 586.59 : x
  2. Step 2: Convert to fraction form
    1,407.93/2,112.30 = 586.59/x
  3. Step 3: Cross multiply
    1,407.93x = 2,112.30 × 586.59
  4. Step 4: Simplify right side
    1,407.93x = 1,239,054.06
  5. Step 5: Solve for x
    x = 1,239,054.06/1,407.93
  6. Step 6: Final answer
    x = 880.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.