Home / 1,832.15-2,528.69-1,389.30

Finding the Fourth Proportional to 1,832.15, 2,528.69 and 1,389.30

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Solution

The fourth proportional to 1,832.15, 2,528.69 and 1,389.30 is: 1,917.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,832.15 : 2,528.69 = 1,389.30 : x
  2. Step 2: Convert to fraction form
    1,832.15/2,528.69 = 1,389.30/x
  3. Step 3: Cross multiply
    1,832.15x = 2,528.69 × 1,389.30
  4. Step 4: Simplify right side
    1,832.15x = 3,513,102.07
  5. Step 5: Solve for x
    x = 3,513,102.07/1,832.15
  6. Step 6: Final answer
    x = 1,917.48

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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.