Home / 1,909.04-2,634.47-1,123.08

Finding the Fourth Proportional to 1,909.04, 2,634.47 and 1,123.08

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Solution

The fourth proportional to 1,909.04, 2,634.47 and 1,123.08 is: 1,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.04 : 2,634.47 = 1,123.08 : x
  2. Step 2: Convert to fraction form
    1,909.04/2,634.47 = 1,123.08/x
  3. Step 3: Cross multiply
    1,909.04x = 2,634.47 × 1,123.08
  4. Step 4: Simplify right side
    1,909.04x = 2,958,714.95
  5. Step 5: Solve for x
    x = 2,958,714.95/1,909.04
  6. Step 6: Final answer
    x = 1,549.85

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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.