Home / 2,931.48-4,397.76-1,890.99

Finding the Fourth Proportional to 2,931.48, 4,397.76 and 1,890.99

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Solution

The fourth proportional to 2,931.48, 4,397.76 and 1,890.99 is: 2,836.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.48 : 4,397.76 = 1,890.99 : x
  2. Step 2: Convert to fraction form
    2,931.48/4,397.76 = 1,890.99/x
  3. Step 3: Cross multiply
    2,931.48x = 4,397.76 × 1,890.99
  4. Step 4: Simplify right side
    2,931.48x = 8,316,120.18
  5. Step 5: Solve for x
    x = 8,316,120.18/2,931.48
  6. Step 6: Final answer
    x = 2,836.83

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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.