Home / 8,490.98-11,721.47-5,089.60

Finding the Fourth Proportional to 8,490.98, 11,721.47 and 5,089.60

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Solution

The fourth proportional to 8,490.98, 11,721.47 and 5,089.60 is: 7,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.98 : 11,721.47 = 5,089.60 : x
  2. Step 2: Convert to fraction form
    8,490.98/11,721.47 = 5,089.60/x
  3. Step 3: Cross multiply
    8,490.98x = 11,721.47 × 5,089.60
  4. Step 4: Simplify right side
    8,490.98x = 59,657,538.96
  5. Step 5: Solve for x
    x = 59,657,538.96/8,490.98
  6. Step 6: Final answer
    x = 7,025.99

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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.