Home / 1,970.37-2,718.16-1,261.65

Finding the Fourth Proportional to 1,970.37, 2,718.16 and 1,261.65

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Solution

The fourth proportional to 1,970.37, 2,718.16 and 1,261.65 is: 1,740.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,970.37 : 2,718.16 = 1,261.65 : x
  2. Step 2: Convert to fraction form
    1,970.37/2,718.16 = 1,261.65/x
  3. Step 3: Cross multiply
    1,970.37x = 2,718.16 × 1,261.65
  4. Step 4: Simplify right side
    1,970.37x = 3,429,368.14
  5. Step 5: Solve for x
    x = 3,429,368.14/1,970.37
  6. Step 6: Final answer
    x = 1,740.47

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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.