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Finding the Fourth Proportional to 6,397.50, 8,820.45 and 5,259

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Solution

The fourth proportional to 6,397.50, 8,820.45 and 5,259 is: 7,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,397.50 : 8,820.45 = 5,259 : x
  2. Step 2: Convert to fraction form
    6,397.50/8,820.45 = 5,259/x
  3. Step 3: Cross multiply
    6,397.50x = 8,820.45 × 5,259
  4. Step 4: Simplify right side
    6,397.50x = 46,386,746.55
  5. Step 5: Solve for x
    x = 46,386,746.55/6,397.50
  6. Step 6: Final answer
    x = 7,250.76

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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.