Home / 4,752.20-7,130.46-1,980.92

Finding the Fourth Proportional to 4,752.20, 7,130.46 and 1,980.92

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Solution

The fourth proportional to 4,752.20, 7,130.46 and 1,980.92 is: 2,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.20 : 7,130.46 = 1,980.92 : x
  2. Step 2: Convert to fraction form
    4,752.20/7,130.46 = 1,980.92/x
  3. Step 3: Cross multiply
    4,752.20x = 7,130.46 × 1,980.92
  4. Step 4: Simplify right side
    4,752.20x = 14,124,870.82
  5. Step 5: Solve for x
    x = 14,124,870.82/4,752.20
  6. Step 6: Final answer
    x = 2,972.28

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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.