Home / 4,777.80-7,166.88-1,315.32

Finding the Fourth Proportional to 4,777.80, 7,166.88 and 1,315.32

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Solution

The fourth proportional to 4,777.80, 7,166.88 and 1,315.32 is: 1,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,777.80 : 7,166.88 = 1,315.32 : x
  2. Step 2: Convert to fraction form
    4,777.80/7,166.88 = 1,315.32/x
  3. Step 3: Cross multiply
    4,777.80x = 7,166.88 × 1,315.32
  4. Step 4: Simplify right side
    4,777.80x = 9,426,740.60
  5. Step 5: Solve for x
    x = 9,426,740.60/4,777.80
  6. Step 6: Final answer
    x = 1,973.03

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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.