Home / 2,931.38-4,045.30-1,605.07

Finding the Fourth Proportional to 2,931.38, 4,045.30 and 1,605.07

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Solution

The fourth proportional to 2,931.38, 4,045.30 and 1,605.07 is: 2,214.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.38 : 4,045.30 = 1,605.07 : x
  2. Step 2: Convert to fraction form
    2,931.38/4,045.30 = 1,605.07/x
  3. Step 3: Cross multiply
    2,931.38x = 4,045.30 × 1,605.07
  4. Step 4: Simplify right side
    2,931.38x = 6,492,989.67
  5. Step 5: Solve for x
    x = 6,492,989.67/2,931.38
  6. Step 6: Final answer
    x = 2,214.99

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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.