Home / 3,124.80-4,688.40-3,075.60

Finding the Fourth Proportional to 3,124.80, 4,688.40 and 3,075.60

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Solution

The fourth proportional to 3,124.80, 4,688.40 and 3,075.60 is: 4,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.80 : 4,688.40 = 3,075.60 : x
  2. Step 2: Convert to fraction form
    3,124.80/4,688.40 = 3,075.60/x
  3. Step 3: Cross multiply
    3,124.80x = 4,688.40 × 3,075.60
  4. Step 4: Simplify right side
    3,124.80x = 14,419,643.04
  5. Step 5: Solve for x
    x = 14,419,643.04/3,124.80
  6. Step 6: Final answer
    x = 4,614.58

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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.