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Finding the Fourth Proportional to 1,347.09, 1,858.35 and 874.95

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Solution

The fourth proportional to 1,347.09, 1,858.35 and 874.95 is: 1,207.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.09 : 1,858.35 = 874.95 : x
  2. Step 2: Convert to fraction form
    1,347.09/1,858.35 = 874.95/x
  3. Step 3: Cross multiply
    1,347.09x = 1,858.35 × 874.95
  4. Step 4: Simplify right side
    1,347.09x = 1,625,963.33
  5. Step 5: Solve for x
    x = 1,625,963.33/1,347.09
  6. Step 6: Final answer
    x = 1,207.02

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1.5x scale

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.