Home / 3,521.07-5,285.02-1,878.77

Finding the Fourth Proportional to 3,521.07, 5,285.02 and 1,878.77

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Solution

The fourth proportional to 3,521.07, 5,285.02 and 1,878.77 is: 2,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.07 : 5,285.02 = 1,878.77 : x
  2. Step 2: Convert to fraction form
    3,521.07/5,285.02 = 1,878.77/x
  3. Step 3: Cross multiply
    3,521.07x = 5,285.02 × 1,878.77
  4. Step 4: Simplify right side
    3,521.07x = 9,929,339.48
  5. Step 5: Solve for x
    x = 9,929,339.48/3,521.07
  6. Step 6: Final answer
    x = 2,819.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.