Home / 8,721.51-12,030.30-7,605.12

Finding the Fourth Proportional to 8,721.51, 12,030.30 and 7,605.12

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Solution

The fourth proportional to 8,721.51, 12,030.30 and 7,605.12 is: 10,490.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.51 : 12,030.30 = 7,605.12 : x
  2. Step 2: Convert to fraction form
    8,721.51/12,030.30 = 7,605.12/x
  3. Step 3: Cross multiply
    8,721.51x = 12,030.30 × 7,605.12
  4. Step 4: Simplify right side
    8,721.51x = 91,491,776.96
  5. Step 5: Solve for x
    x = 91,491,776.96/8,721.51
  6. Step 6: Final answer
    x = 10,490.36

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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.