Home / 2,931.69-4,045.53-1,672.86

Finding the Fourth Proportional to 2,931.69, 4,045.53 and 1,672.86

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Solution

The fourth proportional to 2,931.69, 4,045.53 and 1,672.86 is: 2,308.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.69 : 4,045.53 = 1,672.86 : x
  2. Step 2: Convert to fraction form
    2,931.69/4,045.53 = 1,672.86/x
  3. Step 3: Cross multiply
    2,931.69x = 4,045.53 × 1,672.86
  4. Step 4: Simplify right side
    2,931.69x = 6,767,605.32
  5. Step 5: Solve for x
    x = 6,767,605.32/2,931.69
  6. Step 6: Final answer
    x = 2,308.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.