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Finding the Fourth Proportional to 5,718.88, 7,893.76 and 5,303.28

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Solution

The fourth proportional to 5,718.88, 7,893.76 and 5,303.28 is: 7,320.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.88 : 7,893.76 = 5,303.28 : x
  2. Step 2: Convert to fraction form
    5,718.88/7,893.76 = 5,303.28/x
  3. Step 3: Cross multiply
    5,718.88x = 7,893.76 × 5,303.28
  4. Step 4: Simplify right side
    5,718.88x = 41,862,819.53
  5. Step 5: Solve for x
    x = 41,862,819.53/5,718.88
  6. Step 6: Final answer
    x = 7,320.11

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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.