Home / 2,178.95-3,005.58-1,294.13

Finding the Fourth Proportional to 2,178.95, 3,005.58 and 1,294.13

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Solution

The fourth proportional to 2,178.95, 3,005.58 and 1,294.13 is: 1,785.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.95 : 3,005.58 = 1,294.13 : x
  2. Step 2: Convert to fraction form
    2,178.95/3,005.58 = 1,294.13/x
  3. Step 3: Cross multiply
    2,178.95x = 3,005.58 × 1,294.13
  4. Step 4: Simplify right side
    2,178.95x = 3,889,596.22
  5. Step 5: Solve for x
    x = 3,889,596.22/2,178.95
  6. Step 6: Final answer
    x = 1,785.08

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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.