Home / 3,818.99-5,270.30-2,140.32

Finding the Fourth Proportional to 3,818.99, 5,270.30 and 2,140.32

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Solution

The fourth proportional to 3,818.99, 5,270.30 and 2,140.32 is: 2,953.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.99 : 5,270.30 = 2,140.32 : x
  2. Step 2: Convert to fraction form
    3,818.99/5,270.30 = 2,140.32/x
  3. Step 3: Cross multiply
    3,818.99x = 5,270.30 × 2,140.32
  4. Step 4: Simplify right side
    3,818.99x = 11,280,117.79
  5. Step 5: Solve for x
    x = 11,280,117.79/3,818.99
  6. Step 6: Final answer
    x = 2,953.69

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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.