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Finding the Fourth Proportional to 5,284.88, 7,880.80 and 4,915.52

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Solution

The fourth proportional to 5,284.88, 7,880.80 and 4,915.52 is: 7,330.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,284.88 : 7,880.80 = 4,915.52 : x
  2. Step 2: Convert to fraction form
    5,284.88/7,880.80 = 4,915.52/x
  3. Step 3: Cross multiply
    5,284.88x = 7,880.80 × 4,915.52
  4. Step 4: Simplify right side
    5,284.88x = 38,738,230.02
  5. Step 5: Solve for x
    x = 38,738,230.02/5,284.88
  6. Step 6: Final answer
    x = 7,330.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.