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Finding the Fourth Proportional to 1,855.71, 2,561.36 and 1,158.03

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Solution

The fourth proportional to 1,855.71, 2,561.36 and 1,158.03 is: 1,598.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.71 : 2,561.36 = 1,158.03 : x
  2. Step 2: Convert to fraction form
    1,855.71/2,561.36 = 1,158.03/x
  3. Step 3: Cross multiply
    1,855.71x = 2,561.36 × 1,158.03
  4. Step 4: Simplify right side
    1,855.71x = 2,966,125.93
  5. Step 5: Solve for x
    x = 2,966,125.93/1,855.71
  6. Step 6: Final answer
    x = 1,598.38

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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.