Home / 1,877.52-2,590.68-1,214.40

Finding the Fourth Proportional to 1,877.52, 2,590.68 and 1,214.40

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Solution

The fourth proportional to 1,877.52, 2,590.68 and 1,214.40 is: 1,675.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,877.52 : 2,590.68 = 1,214.40 : x
  2. Step 2: Convert to fraction form
    1,877.52/2,590.68 = 1,214.40/x
  3. Step 3: Cross multiply
    1,877.52x = 2,590.68 × 1,214.40
  4. Step 4: Simplify right side
    1,877.52x = 3,146,121.79
  5. Step 5: Solve for x
    x = 3,146,121.79/1,877.52
  6. Step 6: Final answer
    x = 1,675.68

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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.