Home / 8,490.72-12,721.38-4,597.80

Finding the Fourth Proportional to 8,490.72, 12,721.38 and 4,597.80

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Solution

The fourth proportional to 8,490.72, 12,721.38 and 4,597.80 is: 6,888.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.72 : 12,721.38 = 4,597.80 : x
  2. Step 2: Convert to fraction form
    8,490.72/12,721.38 = 4,597.80/x
  3. Step 3: Cross multiply
    8,490.72x = 12,721.38 × 4,597.80
  4. Step 4: Simplify right side
    8,490.72x = 58,490,360.96
  5. Step 5: Solve for x
    x = 58,490,360.96/8,490.72
  6. Step 6: Final answer
    x = 6,888.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.