Home / 4,990.05-7,485.62-1,871.55

Finding the Fourth Proportional to 4,990.05, 7,485.62 and 1,871.55

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Solution

The fourth proportional to 4,990.05, 7,485.62 and 1,871.55 is: 2,807.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.05 : 7,485.62 = 1,871.55 : x
  2. Step 2: Convert to fraction form
    4,990.05/7,485.62 = 1,871.55/x
  3. Step 3: Cross multiply
    4,990.05x = 7,485.62 × 1,871.55
  4. Step 4: Simplify right side
    4,990.05x = 14,009,702.75
  5. Step 5: Solve for x
    x = 14,009,702.75/4,990.05
  6. Step 6: Final answer
    x = 2,807.53

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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.