Home / 2,925.10-4,387.67-977.31

Finding the Fourth Proportional to 2,925.10, 4,387.67 and 977.31

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Solution

The fourth proportional to 2,925.10, 4,387.67 and 977.31 is: 1,465.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,925.10 : 4,387.67 = 977.31 : x
  2. Step 2: Convert to fraction form
    2,925.10/4,387.67 = 977.31/x
  3. Step 3: Cross multiply
    2,925.10x = 4,387.67 × 977.31
  4. Step 4: Simplify right side
    2,925.10x = 4,288,113.77
  5. Step 5: Solve for x
    x = 4,288,113.77/2,925.10
  6. Step 6: Final answer
    x = 1,465.97

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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.