Home / 2,931.34-4,045.08-1,605.06

Finding the Fourth Proportional to 2,931.34, 4,045.08 and 1,605.06

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Solution

The fourth proportional to 2,931.34, 4,045.08 and 1,605.06 is: 2,214.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.34 : 4,045.08 = 1,605.06 : x
  2. Step 2: Convert to fraction form
    2,931.34/4,045.08 = 1,605.06/x
  3. Step 3: Cross multiply
    2,931.34x = 4,045.08 × 1,605.06
  4. Step 4: Simplify right side
    2,931.34x = 6,492,596.10
  5. Step 5: Solve for x
    x = 6,492,596.10/2,931.34
  6. Step 6: Final answer
    x = 2,214.89

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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.