Home / 8,780.51-13,159.27-7,667.12

Finding the Fourth Proportional to 8,780.51, 13,159.27 and 7,667.12

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Solution

The fourth proportional to 8,780.51, 13,159.27 and 7,667.12 is: 11,490.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.51 : 13,159.27 = 7,667.12 : x
  2. Step 2: Convert to fraction form
    8,780.51/13,159.27 = 7,667.12/x
  3. Step 3: Cross multiply
    8,780.51x = 13,159.27 × 7,667.12
  4. Step 4: Simplify right side
    8,780.51x = 100,893,598.07
  5. Step 5: Solve for x
    x = 100,893,598.07/8,780.51
  6. Step 6: Final answer
    x = 11,490.64

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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.