Home / 9,290.89-12,820.98-5,312.44

Finding the Fourth Proportional to 9,290.89, 12,820.98 and 5,312.44

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Solution

The fourth proportional to 9,290.89, 12,820.98 and 5,312.44 is: 7,330.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,290.89 : 12,820.98 = 5,312.44 : x
  2. Step 2: Convert to fraction form
    9,290.89/12,820.98 = 5,312.44/x
  3. Step 3: Cross multiply
    9,290.89x = 12,820.98 × 5,312.44
  4. Step 4: Simplify right side
    9,290.89x = 68,110,686.99
  5. Step 5: Solve for x
    x = 68,110,686.99/9,290.89
  6. Step 6: Final answer
    x = 7,330.91

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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.