Home / 5,430.48-8,139.60-2,651.16

Finding the Fourth Proportional to 5,430.48, 8,139.60 and 2,651.16

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Solution

The fourth proportional to 5,430.48, 8,139.60 and 2,651.16 is: 3,973.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.48 : 8,139.60 = 2,651.16 : x
  2. Step 2: Convert to fraction form
    5,430.48/8,139.60 = 2,651.16/x
  3. Step 3: Cross multiply
    5,430.48x = 8,139.60 × 2,651.16
  4. Step 4: Simplify right side
    5,430.48x = 21,579,381.94
  5. Step 5: Solve for x
    x = 21,579,381.94/5,430.48
  6. Step 6: Final answer
    x = 3,973.75

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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.