Home / 1,855.10-2,558.92-1,225.63

Finding the Fourth Proportional to 1,855.10, 2,558.92 and 1,225.63

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Solution

The fourth proportional to 1,855.10, 2,558.92 and 1,225.63 is: 1,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,855.10 : 2,558.92 = 1,225.63 : x
  2. Step 2: Convert to fraction form
    1,855.10/2,558.92 = 1,225.63/x
  3. Step 3: Cross multiply
    1,855.10x = 2,558.92 × 1,225.63
  4. Step 4: Simplify right side
    1,855.10x = 3,136,289.12
  5. Step 5: Solve for x
    x = 3,136,289.12/1,855.10
  6. Step 6: Final answer
    x = 1,690.63

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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.