Home / 5,145.93-7,101.65-2,907.90

Finding the Fourth Proportional to 5,145.93, 7,101.65 and 2,907.90

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Solution

The fourth proportional to 5,145.93, 7,101.65 and 2,907.90 is: 4,013.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.93 : 7,101.65 = 2,907.90 : x
  2. Step 2: Convert to fraction form
    5,145.93/7,101.65 = 2,907.90/x
  3. Step 3: Cross multiply
    5,145.93x = 7,101.65 × 2,907.90
  4. Step 4: Simplify right side
    5,145.93x = 20,650,852.53
  5. Step 5: Solve for x
    x = 20,650,852.53/5,145.93
  6. Step 6: Final answer
    x = 4,013.05

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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.