Home / 2,690.42-4,037.19-1,130.30

Finding the Fourth Proportional to 2,690.42, 4,037.19 and 1,130.30

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Solution

The fourth proportional to 2,690.42, 4,037.19 and 1,130.30 is: 1,696.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.42 : 4,037.19 = 1,130.30 : x
  2. Step 2: Convert to fraction form
    2,690.42/4,037.19 = 1,130.30/x
  3. Step 3: Cross multiply
    2,690.42x = 4,037.19 × 1,130.30
  4. Step 4: Simplify right side
    2,690.42x = 4,563,235.86
  5. Step 5: Solve for x
    x = 4,563,235.86/2,690.42
  6. Step 6: Final answer
    x = 1,696.11

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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.