Home / 4,277.80-6,421.90-2,430.20

Finding the Fourth Proportional to 4,277.80, 6,421.90 and 2,430.20

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Solution

The fourth proportional to 4,277.80, 6,421.90 and 2,430.20 is: 3,648.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,277.80 : 6,421.90 = 2,430.20 : x
  2. Step 2: Convert to fraction form
    4,277.80/6,421.90 = 2,430.20/x
  3. Step 3: Cross multiply
    4,277.80x = 6,421.90 × 2,430.20
  4. Step 4: Simplify right side
    4,277.80x = 15,606,501.38
  5. Step 5: Solve for x
    x = 15,606,501.38/4,277.80
  6. Step 6: Final answer
    x = 3,648.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.