Home / 2,485.92-3,419.10-2,087.40

Finding the Fourth Proportional to 2,485.92, 3,419.10 and 2,087.40

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Solution

The fourth proportional to 2,485.92, 3,419.10 and 2,087.40 is: 2,870.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.92 : 3,419.10 = 2,087.40 : x
  2. Step 2: Convert to fraction form
    2,485.92/3,419.10 = 2,087.40/x
  3. Step 3: Cross multiply
    2,485.92x = 3,419.10 × 2,087.40
  4. Step 4: Simplify right side
    2,485.92x = 7,137,029.34
  5. Step 5: Solve for x
    x = 7,137,029.34/2,485.92
  6. Step 6: Final answer
    x = 2,870.98

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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.