Home / 4,752.21-7,127.55-1,420.41

Finding the Fourth Proportional to 4,752.21, 7,127.55 and 1,420.41

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Solution

The fourth proportional to 4,752.21, 7,127.55 and 1,420.41 is: 2,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.21 : 7,127.55 = 1,420.41 : x
  2. Step 2: Convert to fraction form
    4,752.21/7,127.55 = 1,420.41/x
  3. Step 3: Cross multiply
    4,752.21x = 7,127.55 × 1,420.41
  4. Step 4: Simplify right side
    4,752.21x = 10,124,043.30
  5. Step 5: Solve for x
    x = 10,124,043.30/4,752.21
  6. Step 6: Final answer
    x = 2,130.39

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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.