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Finding the Fourth Proportional to 7,307.40, 10,151.80 and 7,239.08

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Solution

The fourth proportional to 7,307.40, 10,151.80 and 7,239.08 is: 10,056.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,307.40 : 10,151.80 = 7,239.08 : x
  2. Step 2: Convert to fraction form
    7,307.40/10,151.80 = 7,239.08/x
  3. Step 3: Cross multiply
    7,307.40x = 10,151.80 × 7,239.08
  4. Step 4: Simplify right side
    7,307.40x = 73,489,692.34
  5. Step 5: Solve for x
    x = 73,489,692.34/7,307.40
  6. Step 6: Final answer
    x = 10,056.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.