Home / 7,778.72-10,734.27-4,421.45

Finding the Fourth Proportional to 7,778.72, 10,734.27 and 4,421.45

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Solution

The fourth proportional to 7,778.72, 10,734.27 and 4,421.45 is: 6,101.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.72 : 10,734.27 = 4,421.45 : x
  2. Step 2: Convert to fraction form
    7,778.72/10,734.27 = 4,421.45/x
  3. Step 3: Cross multiply
    7,778.72x = 10,734.27 × 4,421.45
  4. Step 4: Simplify right side
    7,778.72x = 47,461,038.09
  5. Step 5: Solve for x
    x = 47,461,038.09/7,778.72
  6. Step 6: Final answer
    x = 6,101.39

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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.