Home / 1,810.39-2,497.88-1,138.30

Finding the Fourth Proportional to 1,810.39, 2,497.88 and 1,138.30

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Solution

The fourth proportional to 1,810.39, 2,497.88 and 1,138.30 is: 1,570.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,810.39 : 2,497.88 = 1,138.30 : x
  2. Step 2: Convert to fraction form
    1,810.39/2,497.88 = 1,138.30/x
  3. Step 3: Cross multiply
    1,810.39x = 2,497.88 × 1,138.30
  4. Step 4: Simplify right side
    1,810.39x = 2,843,331.11
  5. Step 5: Solve for x
    x = 2,843,331.11/1,810.39
  6. Step 6: Final answer
    x = 1,570.56

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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.