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Finding the Fourth Proportional to 7,898.78, 10,898.35 and 4,542.55

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Solution

The fourth proportional to 7,898.78, 10,898.35 and 4,542.55 is: 6,267.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.78 : 10,898.35 = 4,542.55 : x
  2. Step 2: Convert to fraction form
    7,898.78/10,898.35 = 4,542.55/x
  3. Step 3: Cross multiply
    7,898.78x = 10,898.35 × 4,542.55
  4. Step 4: Simplify right side
    7,898.78x = 49,506,261.19
  5. Step 5: Solve for x
    x = 49,506,261.19/7,898.78
  6. Step 6: Final answer
    x = 6,267.58

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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.