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Finding the Fourth Proportional to 1,347.42, 1,860.93 and 1,329.21

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Solution

The fourth proportional to 1,347.42, 1,860.93 and 1,329.21 is: 1,835.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.42 : 1,860.93 = 1,329.21 : x
  2. Step 2: Convert to fraction form
    1,347.42/1,860.93 = 1,329.21/x
  3. Step 3: Cross multiply
    1,347.42x = 1,860.93 × 1,329.21
  4. Step 4: Simplify right side
    1,347.42x = 2,473,566.77
  5. Step 5: Solve for x
    x = 2,473,566.77/1,347.42
  6. Step 6: Final answer
    x = 1,835.78

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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.