Home / 1,434.08-1,977.60-910.40

Finding the Fourth Proportional to 1,434.08, 1,977.60 and 910.40

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Solution

The fourth proportional to 1,434.08, 1,977.60 and 910.40 is: 1,255.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,434.08 : 1,977.60 = 910.40 : x
  2. Step 2: Convert to fraction form
    1,434.08/1,977.60 = 910.40/x
  3. Step 3: Cross multiply
    1,434.08x = 1,977.60 × 910.40
  4. Step 4: Simplify right side
    1,434.08x = 1,800,407.04
  5. Step 5: Solve for x
    x = 1,800,407.04/1,434.08
  6. Step 6: Final answer
    x = 1,255.44

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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.