Home / 5,421.24-8,085.60-4,722.20

Finding the Fourth Proportional to 5,421.24, 8,085.60 and 4,722.20

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Solution

The fourth proportional to 5,421.24, 8,085.60 and 4,722.20 is: 7,043.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.24 : 8,085.60 = 4,722.20 : x
  2. Step 2: Convert to fraction form
    5,421.24/8,085.60 = 4,722.20/x
  3. Step 3: Cross multiply
    5,421.24x = 8,085.60 × 4,722.20
  4. Step 4: Simplify right side
    5,421.24x = 38,181,820.32
  5. Step 5: Solve for x
    x = 38,181,820.32/5,421.24
  6. Step 6: Final answer
    x = 7,043.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.