Home / 2,931.77-4,045.84-1,605.50

Finding the Fourth Proportional to 2,931.77, 4,045.84 and 1,605.50

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Solution

The fourth proportional to 2,931.77, 4,045.84 and 1,605.50 is: 2,215.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.77 : 4,045.84 = 1,605.50 : x
  2. Step 2: Convert to fraction form
    2,931.77/4,045.84 = 1,605.50/x
  3. Step 3: Cross multiply
    2,931.77x = 4,045.84 × 1,605.50
  4. Step 4: Simplify right side
    2,931.77x = 6,495,567.86
  5. Step 5: Solve for x
    x = 6,495,567.86/2,931.77
  6. Step 6: Final answer
    x = 2,215.58

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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.