Home / 7,840.98-10,814.85-5,190.66

Finding the Fourth Proportional to 7,840.98, 10,814.85 and 5,190.66

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Solution

The fourth proportional to 7,840.98, 10,814.85 and 5,190.66 is: 7,159.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,840.98 : 10,814.85 = 5,190.66 : x
  2. Step 2: Convert to fraction form
    7,840.98/10,814.85 = 5,190.66/x
  3. Step 3: Cross multiply
    7,840.98x = 10,814.85 × 5,190.66
  4. Step 4: Simplify right side
    7,840.98x = 56,136,209.30
  5. Step 5: Solve for x
    x = 56,136,209.30/7,840.98
  6. Step 6: Final answer
    x = 7,159.34

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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.