Home / 2,154.96-2,973.78-1,210.76

Finding the Fourth Proportional to 2,154.96, 2,973.78 and 1,210.76

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Solution

The fourth proportional to 2,154.96, 2,973.78 and 1,210.76 is: 1,670.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.96 : 2,973.78 = 1,210.76 : x
  2. Step 2: Convert to fraction form
    2,154.96/2,973.78 = 1,210.76/x
  3. Step 3: Cross multiply
    2,154.96x = 2,973.78 × 1,210.76
  4. Step 4: Simplify right side
    2,154.96x = 3,600,519.00
  5. Step 5: Solve for x
    x = 3,600,519.00/2,154.96
  6. Step 6: Final answer
    x = 1,670.81

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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.