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Finding the Fourth Proportional to 1,400.70, 1,934.27 and 904.19

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Solution

The fourth proportional to 1,400.70, 1,934.27 and 904.19 is: 1,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,400.70 : 1,934.27 = 904.19 : x
  2. Step 2: Convert to fraction form
    1,400.70/1,934.27 = 904.19/x
  3. Step 3: Cross multiply
    1,400.70x = 1,934.27 × 904.19
  4. Step 4: Simplify right side
    1,400.70x = 1,748,933.40
  5. Step 5: Solve for x
    x = 1,748,933.40/1,400.70
  6. Step 6: Final answer
    x = 1,248.61

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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.