Home / 2,269.08-3,130.96-1,428.32

Finding the Fourth Proportional to 2,269.08, 3,130.96 and 1,428.32

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Solution

The fourth proportional to 2,269.08, 3,130.96 and 1,428.32 is: 1,970.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.08 : 3,130.96 = 1,428.32 : x
  2. Step 2: Convert to fraction form
    2,269.08/3,130.96 = 1,428.32/x
  3. Step 3: Cross multiply
    2,269.08x = 3,130.96 × 1,428.32
  4. Step 4: Simplify right side
    2,269.08x = 4,472,012.79
  5. Step 5: Solve for x
    x = 4,472,012.79/2,269.08
  6. Step 6: Final answer
    x = 1,970.85

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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.