Home / 8,139.99-11,235.40-4,783.88

Finding the Fourth Proportional to 8,139.99, 11,235.40 and 4,783.88

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Solution

The fourth proportional to 8,139.99, 11,235.40 and 4,783.88 is: 6,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.99 : 11,235.40 = 4,783.88 : x
  2. Step 2: Convert to fraction form
    8,139.99/11,235.40 = 4,783.88/x
  3. Step 3: Cross multiply
    8,139.99x = 11,235.40 × 4,783.88
  4. Step 4: Simplify right side
    8,139.99x = 53,748,821.48
  5. Step 5: Solve for x
    x = 53,748,821.48/8,139.99
  6. Step 6: Final answer
    x = 6,603.06

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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.