Home / 2,140.08-2,953.41-1,615.20

Finding the Fourth Proportional to 2,140.08, 2,953.41 and 1,615.20

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Solution

The fourth proportional to 2,140.08, 2,953.41 and 1,615.20 is: 2,229.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.08 : 2,953.41 = 1,615.20 : x
  2. Step 2: Convert to fraction form
    2,140.08/2,953.41 = 1,615.20/x
  3. Step 3: Cross multiply
    2,140.08x = 2,953.41 × 1,615.20
  4. Step 4: Simplify right side
    2,140.08x = 4,770,347.83
  5. Step 5: Solve for x
    x = 4,770,347.83/2,140.08
  6. Step 6: Final answer
    x = 2,229.05

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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.