Home / 2,154.84-2,973.72-1,210.85

Finding the Fourth Proportional to 2,154.84, 2,973.72 and 1,210.85

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Solution

The fourth proportional to 2,154.84, 2,973.72 and 1,210.85 is: 1,670.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.84 : 2,973.72 = 1,210.85 : x
  2. Step 2: Convert to fraction form
    2,154.84/2,973.72 = 1,210.85/x
  3. Step 3: Cross multiply
    2,154.84x = 2,973.72 × 1,210.85
  4. Step 4: Simplify right side
    2,154.84x = 3,600,713.99
  5. Step 5: Solve for x
    x = 3,600,713.99/2,154.84
  6. Step 6: Final answer
    x = 1,670.99

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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.