Home / 5,137.95-7,090.35-2,780.08

Finding the Fourth Proportional to 5,137.95, 7,090.35 and 2,780.08

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Solution

The fourth proportional to 5,137.95, 7,090.35 and 2,780.08 is: 3,836.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.95 : 7,090.35 = 2,780.08 : x
  2. Step 2: Convert to fraction form
    5,137.95/7,090.35 = 2,780.08/x
  3. Step 3: Cross multiply
    5,137.95x = 7,090.35 × 2,780.08
  4. Step 4: Simplify right side
    5,137.95x = 19,711,740.23
  5. Step 5: Solve for x
    x = 19,711,740.23/5,137.95
  6. Step 6: Final answer
    x = 3,836.50

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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.