Home / 2,925.20-4,389.10-1,538.20

Finding the Fourth Proportional to 2,925.20, 4,389.10 and 1,538.20

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Solution

The fourth proportional to 2,925.20, 4,389.10 and 1,538.20 is: 2,307.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.20 : 4,389.10 = 1,538.20 : x
  2. Step 2: Convert to fraction form
    2,925.20/4,389.10 = 1,538.20/x
  3. Step 3: Cross multiply
    2,925.20x = 4,389.10 × 1,538.20
  4. Step 4: Simplify right side
    2,925.20x = 6,751,313.62
  5. Step 5: Solve for x
    x = 6,751,313.62/2,925.20
  6. Step 6: Final answer
    x = 2,307.98

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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.