Home / 8,750.08-13,127.28-7,782.40

Finding the Fourth Proportional to 8,750.08, 13,127.28 and 7,782.40

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Solution

The fourth proportional to 8,750.08, 13,127.28 and 7,782.40 is: 11,675.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,750.08 : 13,127.28 = 7,782.40 : x
  2. Step 2: Convert to fraction form
    8,750.08/13,127.28 = 7,782.40/x
  3. Step 3: Cross multiply
    8,750.08x = 13,127.28 × 7,782.40
  4. Step 4: Simplify right side
    8,750.08x = 102,161,743.87
  5. Step 5: Solve for x
    x = 102,161,743.87/8,750.08
  6. Step 6: Final answer
    x = 11,675.52

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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.