Home / 5,138.04-7,090.80-2,899.50

Finding the Fourth Proportional to 5,138.04, 7,090.80 and 2,899.50

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Solution

The fourth proportional to 5,138.04, 7,090.80 and 2,899.50 is: 4,001.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.04 : 7,090.80 = 2,899.50 : x
  2. Step 2: Convert to fraction form
    5,138.04/7,090.80 = 2,899.50/x
  3. Step 3: Cross multiply
    5,138.04x = 7,090.80 × 2,899.50
  4. Step 4: Simplify right side
    5,138.04x = 20,559,774.60
  5. Step 5: Solve for x
    x = 20,559,774.60/5,138.04
  6. Step 6: Final answer
    x = 4,001.48

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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.