Home / 2,145.02-2,960.71-1,261.11

Finding the Fourth Proportional to 2,145.02, 2,960.71 and 1,261.11

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Solution

The fourth proportional to 2,145.02, 2,960.71 and 1,261.11 is: 1,740.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.02 : 2,960.71 = 1,261.11 : x
  2. Step 2: Convert to fraction form
    2,145.02/2,960.71 = 1,261.11/x
  3. Step 3: Cross multiply
    2,145.02x = 2,960.71 × 1,261.11
  4. Step 4: Simplify right side
    2,145.02x = 3,733,780.99
  5. Step 5: Solve for x
    x = 3,733,780.99/2,145.02
  6. Step 6: Final answer
    x = 1,740.67

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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.