Home / 7,112.49-9,815.22-4,130.07

Finding the Fourth Proportional to 7,112.49, 9,815.22 and 4,130.07

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Solution

The fourth proportional to 7,112.49, 9,815.22 and 4,130.07 is: 5,699.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,112.49 : 9,815.22 = 4,130.07 : x
  2. Step 2: Convert to fraction form
    7,112.49/9,815.22 = 4,130.07/x
  3. Step 3: Cross multiply
    7,112.49x = 9,815.22 × 4,130.07
  4. Step 4: Simplify right side
    7,112.49x = 40,537,545.67
  5. Step 5: Solve for x
    x = 40,537,545.67/7,112.49
  6. Step 6: Final answer
    x = 5,699.49

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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.