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Finding the Fourth Proportional to 2,916.71, 4,026.53 and 1,855.55

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Solution

The fourth proportional to 2,916.71, 4,026.53 and 1,855.55 is: 2,561.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,916.71 : 4,026.53 = 1,855.55 : x
  2. Step 2: Convert to fraction form
    2,916.71/4,026.53 = 1,855.55/x
  3. Step 3: Cross multiply
    2,916.71x = 4,026.53 × 1,855.55
  4. Step 4: Simplify right side
    2,916.71x = 7,471,427.74
  5. Step 5: Solve for x
    x = 7,471,427.74/2,916.71
  6. Step 6: Final answer
    x = 2,561.59

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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.