Home / 1,956.45-2,699.86-1,210.21

Finding the Fourth Proportional to 1,956.45, 2,699.86 and 1,210.21

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Solution

The fourth proportional to 1,956.45, 2,699.86 and 1,210.21 is: 1,670.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,956.45 : 2,699.86 = 1,210.21 : x
  2. Step 2: Convert to fraction form
    1,956.45/2,699.86 = 1,210.21/x
  3. Step 3: Cross multiply
    1,956.45x = 2,699.86 × 1,210.21
  4. Step 4: Simplify right side
    1,956.45x = 3,267,402.46
  5. Step 5: Solve for x
    x = 3,267,402.46/1,956.45
  6. Step 6: Final answer
    x = 1,670.07

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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.