Home / 8,427.12-12,626.64-5,130.24

Finding the Fourth Proportional to 8,427.12, 12,626.64 and 5,130.24

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Solution

The fourth proportional to 8,427.12, 12,626.64 and 5,130.24 is: 7,686.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.12 : 12,626.64 = 5,130.24 : x
  2. Step 2: Convert to fraction form
    8,427.12/12,626.64 = 5,130.24/x
  3. Step 3: Cross multiply
    8,427.12x = 12,626.64 × 5,130.24
  4. Step 4: Simplify right side
    8,427.12x = 64,777,693.59
  5. Step 5: Solve for x
    x = 64,777,693.59/8,427.12
  6. Step 6: Final answer
    x = 7,686.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.