Home / 6,130.48-8,458.78-3,889.72

Finding the Fourth Proportional to 6,130.48, 8,458.78 and 3,889.72

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Solution

The fourth proportional to 6,130.48, 8,458.78 and 3,889.72 is: 5,367.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,130.48 : 8,458.78 = 3,889.72 : x
  2. Step 2: Convert to fraction form
    6,130.48/8,458.78 = 3,889.72/x
  3. Step 3: Cross multiply
    6,130.48x = 8,458.78 × 3,889.72
  4. Step 4: Simplify right side
    6,130.48x = 32,902,285.74
  5. Step 5: Solve for x
    x = 32,902,285.74/6,130.48
  6. Step 6: Final answer
    x = 5,367.00

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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.