Home / 1,354.19-1,869.83-1,038.95

Finding the Fourth Proportional to 1,354.19, 1,869.83 and 1,038.95

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Solution

The fourth proportional to 1,354.19, 1,869.83 and 1,038.95 is: 1,434.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354.19 : 1,869.83 = 1,038.95 : x
  2. Step 2: Convert to fraction form
    1,354.19/1,869.83 = 1,038.95/x
  3. Step 3: Cross multiply
    1,354.19x = 1,869.83 × 1,038.95
  4. Step 4: Simplify right side
    1,354.19x = 1,942,653.13
  5. Step 5: Solve for x
    x = 1,942,653.13/1,354.19
  6. Step 6: Final answer
    x = 1,434.56

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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.