Home / 2,101.08-2,898.63-1,261.80

Finding the Fourth Proportional to 2,101.08, 2,898.63 and 1,261.80

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Solution

The fourth proportional to 2,101.08, 2,898.63 and 1,261.80 is: 1,740.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,101.08 : 2,898.63 = 1,261.80 : x
  2. Step 2: Convert to fraction form
    2,101.08/2,898.63 = 1,261.80/x
  3. Step 3: Cross multiply
    2,101.08x = 2,898.63 × 1,261.80
  4. Step 4: Simplify right side
    2,101.08x = 3,657,491.33
  5. Step 5: Solve for x
    x = 3,657,491.33/2,101.08
  6. Step 6: Final answer
    x = 1,740.77

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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.