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Finding the Fourth Proportional to 8,720.51, 12,031.37 and 4,943.37

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Solution

The fourth proportional to 8,720.51, 12,031.37 and 4,943.37 is: 6,820.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.51 : 12,031.37 = 4,943.37 : x
  2. Step 2: Convert to fraction form
    8,720.51/12,031.37 = 4,943.37/x
  3. Step 3: Cross multiply
    8,720.51x = 12,031.37 × 4,943.37
  4. Step 4: Simplify right side
    8,720.51x = 59,475,552.46
  5. Step 5: Solve for x
    x = 59,475,552.46/8,720.51
  6. Step 6: Final answer
    x = 6,820.20

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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.