Home / 9,291.09-12,821.91-5,312.58

Finding the Fourth Proportional to 9,291.09, 12,821.91 and 5,312.58

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Solution

The fourth proportional to 9,291.09, 12,821.91 and 5,312.58 is: 7,331.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,291.09 : 12,821.91 = 5,312.58 : x
  2. Step 2: Convert to fraction form
    9,291.09/12,821.91 = 5,312.58/x
  3. Step 3: Cross multiply
    9,291.09x = 12,821.91 × 5,312.58
  4. Step 4: Simplify right side
    9,291.09x = 68,117,422.63
  5. Step 5: Solve for x
    x = 68,117,422.63/9,291.09
  6. Step 6: Final answer
    x = 7,331.48

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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.