Home / 1,647.95-2,278.55-1,440.46

Finding the Fourth Proportional to 1,647.95, 2,278.55 and 1,440.46

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Solution

The fourth proportional to 1,647.95, 2,278.55 and 1,440.46 is: 1,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,647.95 : 2,278.55 = 1,440.46 : x
  2. Step 2: Convert to fraction form
    1,647.95/2,278.55 = 1,440.46/x
  3. Step 3: Cross multiply
    1,647.95x = 2,278.55 × 1,440.46
  4. Step 4: Simplify right side
    1,647.95x = 3,282,141.54
  5. Step 5: Solve for x
    x = 3,282,141.54/1,647.95
  6. Step 6: Final answer
    x = 1,991.65

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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.