Home / 2,116.54-2,920.35-1,277.74

Finding the Fourth Proportional to 2,116.54, 2,920.35 and 1,277.74

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Solution

The fourth proportional to 2,116.54, 2,920.35 and 1,277.74 is: 1,762.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.54 : 2,920.35 = 1,277.74 : x
  2. Step 2: Convert to fraction form
    2,116.54/2,920.35 = 1,277.74/x
  3. Step 3: Cross multiply
    2,116.54x = 2,920.35 × 1,277.74
  4. Step 4: Simplify right side
    2,116.54x = 3,731,448.01
  5. Step 5: Solve for x
    x = 3,731,448.01/2,116.54
  6. Step 6: Final answer
    x = 1,762.99

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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.