Home / 5,138.18-7,090.74-2,900.07

Finding the Fourth Proportional to 5,138.18, 7,090.74 and 2,900.07

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Solution

The fourth proportional to 5,138.18, 7,090.74 and 2,900.07 is: 4,002.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.18 : 7,090.74 = 2,900.07 : x
  2. Step 2: Convert to fraction form
    5,138.18/7,090.74 = 2,900.07/x
  3. Step 3: Cross multiply
    5,138.18x = 7,090.74 × 2,900.07
  4. Step 4: Simplify right side
    5,138.18x = 20,563,642.35
  5. Step 5: Solve for x
    x = 20,563,642.35/5,138.18
  6. Step 6: Final answer
    x = 4,002.13

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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.