Home / 2,128.66-2,937.29-1,184.20

Finding the Fourth Proportional to 2,128.66, 2,937.29 and 1,184.20

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Solution

The fourth proportional to 2,128.66, 2,937.29 and 1,184.20 is: 1,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.66 : 2,937.29 = 1,184.20 : x
  2. Step 2: Convert to fraction form
    2,128.66/2,937.29 = 1,184.20/x
  3. Step 3: Cross multiply
    2,128.66x = 2,937.29 × 1,184.20
  4. Step 4: Simplify right side
    2,128.66x = 3,478,325.55
  5. Step 5: Solve for x
    x = 3,478,325.55/2,128.66
  6. Step 6: Final answer
    x = 1,634.05

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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.