Home / 2,931.24-4,045.21-1,605.07

Finding the Fourth Proportional to 2,931.24, 4,045.21 and 1,605.07

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Solution

The fourth proportional to 2,931.24, 4,045.21 and 1,605.07 is: 2,215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.24 : 4,045.21 = 1,605.07 : x
  2. Step 2: Convert to fraction form
    2,931.24/4,045.21 = 1,605.07/x
  3. Step 3: Cross multiply
    2,931.24x = 4,045.21 × 1,605.07
  4. Step 4: Simplify right side
    2,931.24x = 6,492,846.26
  5. Step 5: Solve for x
    x = 6,492,846.26/2,931.24
  6. Step 6: Final answer
    x = 2,215.05

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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.