Home / 1,957.21-2,698.15-1,210.75

Finding the Fourth Proportional to 1,957.21, 2,698.15 and 1,210.75

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Solution

The fourth proportional to 1,957.21, 2,698.15 and 1,210.75 is: 1,669.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,957.21 : 2,698.15 = 1,210.75 : x
  2. Step 2: Convert to fraction form
    1,957.21/2,698.15 = 1,210.75/x
  3. Step 3: Cross multiply
    1,957.21x = 2,698.15 × 1,210.75
  4. Step 4: Simplify right side
    1,957.21x = 3,266,785.11
  5. Step 5: Solve for x
    x = 3,266,785.11/1,957.21
  6. Step 6: Final answer
    x = 1,669.10

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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.