Home / 3,216.45-4,821.28-1,570.74

Finding the Fourth Proportional to 3,216.45, 4,821.28 and 1,570.74

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Solution

The fourth proportional to 3,216.45, 4,821.28 and 1,570.74 is: 2,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,216.45 : 4,821.28 = 1,570.74 : x
  2. Step 2: Convert to fraction form
    3,216.45/4,821.28 = 1,570.74/x
  3. Step 3: Cross multiply
    3,216.45x = 4,821.28 × 1,570.74
  4. Step 4: Simplify right side
    3,216.45x = 7,572,977.35
  5. Step 5: Solve for x
    x = 7,572,977.35/3,216.45
  6. Step 6: Final answer
    x = 2,354.45

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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.