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Finding the Fourth Proportional to 1,347.66, 1,860.84 and 1,101.62

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Solution

The fourth proportional to 1,347.66, 1,860.84 and 1,101.62 is: 1,521.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.66 : 1,860.84 = 1,101.62 : x
  2. Step 2: Convert to fraction form
    1,347.66/1,860.84 = 1,101.62/x
  3. Step 3: Cross multiply
    1,347.66x = 1,860.84 × 1,101.62
  4. Step 4: Simplify right side
    1,347.66x = 2,049,939.08
  5. Step 5: Solve for x
    x = 2,049,939.08/1,347.66
  6. Step 6: Final answer
    x = 1,521.11

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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.