Home / 7,977.48-11,009.52-4,621.20

Finding the Fourth Proportional to 7,977.48, 11,009.52 and 4,621.20

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Solution

The fourth proportional to 7,977.48, 11,009.52 and 4,621.20 is: 6,377.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.48 : 11,009.52 = 4,621.20 : x
  2. Step 2: Convert to fraction form
    7,977.48/11,009.52 = 4,621.20/x
  3. Step 3: Cross multiply
    7,977.48x = 11,009.52 × 4,621.20
  4. Step 4: Simplify right side
    7,977.48x = 50,877,193.82
  5. Step 5: Solve for x
    x = 50,877,193.82/7,977.48
  6. Step 6: Final answer
    x = 6,377.60

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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.