Home / 2,152.99-3,225.21-1,420.35

Finding the Fourth Proportional to 2,152.99, 3,225.21 and 1,420.35

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Solution

The fourth proportional to 2,152.99, 3,225.21 and 1,420.35 is: 2,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,152.99 : 3,225.21 = 1,420.35 : x
  2. Step 2: Convert to fraction form
    2,152.99/3,225.21 = 1,420.35/x
  3. Step 3: Cross multiply
    2,152.99x = 3,225.21 × 1,420.35
  4. Step 4: Simplify right side
    2,152.99x = 4,580,927.02
  5. Step 5: Solve for x
    x = 4,580,927.02/2,152.99
  6. Step 6: Final answer
    x = 2,127.70

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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.