Home / 9,360.49-12,918-5,111.94

Finding the Fourth Proportional to 9,360.49, 12,918 and 5,111.94

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Solution

The fourth proportional to 9,360.49, 12,918 and 5,111.94 is: 7,054.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.49 : 12,918 = 5,111.94 : x
  2. Step 2: Convert to fraction form
    9,360.49/12,918 = 5,111.94/x
  3. Step 3: Cross multiply
    9,360.49x = 12,918 × 5,111.94
  4. Step 4: Simplify right side
    9,360.49x = 66,036,089.36
  5. Step 5: Solve for x
    x = 66,036,089.36/9,360.49
  6. Step 6: Final answer
    x = 7,054.77

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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.