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Finding the Fourth Proportional to 6,485.49, 8,945.04 and 5,590.77

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Solution

The fourth proportional to 6,485.49, 8,945.04 and 5,590.77 is: 7,711.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.49 : 8,945.04 = 5,590.77 : x
  2. Step 2: Convert to fraction form
    6,485.49/8,945.04 = 5,590.77/x
  3. Step 3: Cross multiply
    6,485.49x = 8,945.04 × 5,590.77
  4. Step 4: Simplify right side
    6,485.49x = 50,009,661.28
  5. Step 5: Solve for x
    x = 50,009,661.28/6,485.49
  6. Step 6: Final answer
    x = 7,711.01

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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.