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Finding the Fourth Proportional to 1,888.80, 2,606.16 and 1,142.56

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Solution

The fourth proportional to 1,888.80, 2,606.16 and 1,142.56 is: 1,576.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.80 : 2,606.16 = 1,142.56 : x
  2. Step 2: Convert to fraction form
    1,888.80/2,606.16 = 1,142.56/x
  3. Step 3: Cross multiply
    1,888.80x = 2,606.16 × 1,142.56
  4. Step 4: Simplify right side
    1,888.80x = 2,977,694.17
  5. Step 5: Solve for x
    x = 2,977,694.17/1,888.80
  6. Step 6: Final answer
    x = 1,576.50

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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.