Home / 3,013.40-4,158.90-1,818.45

Finding the Fourth Proportional to 3,013.40, 4,158.90 and 1,818.45

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Solution

The fourth proportional to 3,013.40, 4,158.90 and 1,818.45 is: 2,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,013.40 : 4,158.90 = 1,818.45 : x
  2. Step 2: Convert to fraction form
    3,013.40/4,158.90 = 1,818.45/x
  3. Step 3: Cross multiply
    3,013.40x = 4,158.90 × 1,818.45
  4. Step 4: Simplify right side
    3,013.40x = 7,562,730.91
  5. Step 5: Solve for x
    x = 7,562,730.91/3,013.40
  6. Step 6: Final answer
    x = 2,509.70

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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.