Home / 2,070.58-2,857.01-1,231.49

Finding the Fourth Proportional to 2,070.58, 2,857.01 and 1,231.49

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Solution

The fourth proportional to 2,070.58, 2,857.01 and 1,231.49 is: 1,699.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.58 : 2,857.01 = 1,231.49 : x
  2. Step 2: Convert to fraction form
    2,070.58/2,857.01 = 1,231.49/x
  3. Step 3: Cross multiply
    2,070.58x = 2,857.01 × 1,231.49
  4. Step 4: Simplify right side
    2,070.58x = 3,518,374.32
  5. Step 5: Solve for x
    x = 3,518,374.32/2,070.58
  6. Step 6: Final answer
    x = 1,699.22

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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.