Home / 1,547.52-2,135.04-1,372.80

Finding the Fourth Proportional to 1,547.52, 2,135.04 and 1,372.80

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Solution

The fourth proportional to 1,547.52, 2,135.04 and 1,372.80 is: 1,893.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.52 : 2,135.04 = 1,372.80 : x
  2. Step 2: Convert to fraction form
    1,547.52/2,135.04 = 1,372.80/x
  3. Step 3: Cross multiply
    1,547.52x = 2,135.04 × 1,372.80
  4. Step 4: Simplify right side
    1,547.52x = 2,930,982.91
  5. Step 5: Solve for x
    x = 2,930,982.91/1,547.52
  6. Step 6: Final answer
    x = 1,893.99

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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.