Home / 1,941.64-2,912.55-555.18

Finding the Fourth Proportional to 1,941.64, 2,912.55 and 555.18

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Solution

The fourth proportional to 1,941.64, 2,912.55 and 555.18 is: 832.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.64 : 2,912.55 = 555.18 : x
  2. Step 2: Convert to fraction form
    1,941.64/2,912.55 = 555.18/x
  3. Step 3: Cross multiply
    1,941.64x = 2,912.55 × 555.18
  4. Step 4: Simplify right side
    1,941.64x = 1,616,989.51
  5. Step 5: Solve for x
    x = 1,616,989.51/1,941.64
  6. Step 6: Final answer
    x = 832.80

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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.