Home / 2,478.08-3,718.40-1,699.20

Finding the Fourth Proportional to 2,478.08, 3,718.40 and 1,699.20

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Solution

The fourth proportional to 2,478.08, 3,718.40 and 1,699.20 is: 2,549.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.08 : 3,718.40 = 1,699.20 : x
  2. Step 2: Convert to fraction form
    2,478.08/3,718.40 = 1,699.20/x
  3. Step 3: Cross multiply
    2,478.08x = 3,718.40 × 1,699.20
  4. Step 4: Simplify right side
    2,478.08x = 6,318,305.28
  5. Step 5: Solve for x
    x = 6,318,305.28/2,478.08
  6. Step 6: Final answer
    x = 2,549.68

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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.