Home / 1,941.40-2,911.86-554.80

Finding the Fourth Proportional to 1,941.40, 2,911.86 and 554.80

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Solution

The fourth proportional to 1,941.40, 2,911.86 and 554.80 is: 832.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.40 : 2,911.86 = 554.80 : x
  2. Step 2: Convert to fraction form
    1,941.40/2,911.86 = 554.80/x
  3. Step 3: Cross multiply
    1,941.40x = 2,911.86 × 554.80
  4. Step 4: Simplify right side
    1,941.40x = 1,615,499.93
  5. Step 5: Solve for x
    x = 1,615,499.93/1,941.40
  6. Step 6: Final answer
    x = 832.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.