Home / 6,251.12-8,638.80-5,130.24

Finding the Fourth Proportional to 6,251.12, 8,638.80 and 5,130.24

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Solution

The fourth proportional to 6,251.12, 8,638.80 and 5,130.24 is: 7,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,251.12 : 8,638.80 = 5,130.24 : x
  2. Step 2: Convert to fraction form
    6,251.12/8,638.80 = 5,130.24/x
  3. Step 3: Cross multiply
    6,251.12x = 8,638.80 × 5,130.24
  4. Step 4: Simplify right side
    6,251.12x = 44,319,117.31
  5. Step 5: Solve for x
    x = 44,319,117.31/6,251.12
  6. Step 6: Final answer
    x = 7,089.79

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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.