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Finding the Fourth Proportional to 7,312.99, 10,044.77 and 7,172.91

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Solution

The fourth proportional to 7,312.99, 10,044.77 and 7,172.91 is: 9,852.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,312.99 : 10,044.77 = 7,172.91 : x
  2. Step 2: Convert to fraction form
    7,312.99/10,044.77 = 7,172.91/x
  3. Step 3: Cross multiply
    7,312.99x = 10,044.77 × 7,172.91
  4. Step 4: Simplify right side
    7,312.99x = 72,050,231.18
  5. Step 5: Solve for x
    x = 72,050,231.18/7,312.99
  6. Step 6: Final answer
    x = 9,852.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.