Home / 4,051.20-6,075.36-1,315.20

Finding the Fourth Proportional to 4,051.20, 6,075.36 and 1,315.20

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Solution

The fourth proportional to 4,051.20, 6,075.36 and 1,315.20 is: 1,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,051.20 : 6,075.36 = 1,315.20 : x
  2. Step 2: Convert to fraction form
    4,051.20/6,075.36 = 1,315.20/x
  3. Step 3: Cross multiply
    4,051.20x = 6,075.36 × 1,315.20
  4. Step 4: Simplify right side
    4,051.20x = 7,990,313.47
  5. Step 5: Solve for x
    x = 7,990,313.47/4,051.20
  6. Step 6: Final answer
    x = 1,972.33

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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.