Home / 7,648.80-10,556.40-4,505.28

Finding the Fourth Proportional to 7,648.80, 10,556.40 and 4,505.28

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Solution

The fourth proportional to 7,648.80, 10,556.40 and 4,505.28 is: 6,217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,648.80 : 10,556.40 = 4,505.28 : x
  2. Step 2: Convert to fraction form
    7,648.80/10,556.40 = 4,505.28/x
  3. Step 3: Cross multiply
    7,648.80x = 10,556.40 × 4,505.28
  4. Step 4: Simplify right side
    7,648.80x = 47,559,537.79
  5. Step 5: Solve for x
    x = 47,559,537.79/7,648.80
  6. Step 6: Final answer
    x = 6,217.91

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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.