Home / 3,521.48-5,275.53-1,878.80

Finding the Fourth Proportional to 3,521.48, 5,275.53 and 1,878.80

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Solution

The fourth proportional to 3,521.48, 5,275.53 and 1,878.80 is: 2,814.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,521.48 : 5,275.53 = 1,878.80 : x
  2. Step 2: Convert to fraction form
    3,521.48/5,275.53 = 1,878.80/x
  3. Step 3: Cross multiply
    3,521.48x = 5,275.53 × 1,878.80
  4. Step 4: Simplify right side
    3,521.48x = 9,911,639.39
  5. Step 5: Solve for x
    x = 9,911,639.39/3,521.48
  6. Step 6: Final answer
    x = 2,814.63

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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.