Home / 2,120.76-2,925.64-1,334.25

Finding the Fourth Proportional to 2,120.76, 2,925.64 and 1,334.25

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Solution

The fourth proportional to 2,120.76, 2,925.64 and 1,334.25 is: 1,840.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.76 : 2,925.64 = 1,334.25 : x
  2. Step 2: Convert to fraction form
    2,120.76/2,925.64 = 1,334.25/x
  3. Step 3: Cross multiply
    2,120.76x = 2,925.64 × 1,334.25
  4. Step 4: Simplify right side
    2,120.76x = 3,903,535.17
  5. Step 5: Solve for x
    x = 3,903,535.17/2,120.76
  6. Step 6: Final answer
    x = 1,840.63

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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.