Home / 5,138.02-7,090.49-2,899.99

Finding the Fourth Proportional to 5,138.02, 7,090.49 and 2,899.99

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Solution

The fourth proportional to 5,138.02, 7,090.49 and 2,899.99 is: 4,001.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.02 : 7,090.49 = 2,899.99 : x
  2. Step 2: Convert to fraction form
    5,138.02/7,090.49 = 2,899.99/x
  3. Step 3: Cross multiply
    5,138.02x = 7,090.49 × 2,899.99
  4. Step 4: Simplify right side
    5,138.02x = 20,562,300.14
  5. Step 5: Solve for x
    x = 20,562,300.14/5,138.02
  6. Step 6: Final answer
    x = 4,001.99

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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.