Home / 1,038.24-1,423.35-1,010.70

Finding the Fourth Proportional to 1,038.24, 1,423.35 and 1,010.70

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Solution

The fourth proportional to 1,038.24, 1,423.35 and 1,010.70 is: 1,385.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.24 : 1,423.35 = 1,010.70 : x
  2. Step 2: Convert to fraction form
    1,038.24/1,423.35 = 1,010.70/x
  3. Step 3: Cross multiply
    1,038.24x = 1,423.35 × 1,010.70
  4. Step 4: Simplify right side
    1,038.24x = 1,438,579.85
  5. Step 5: Solve for x
    x = 1,438,579.85/1,038.24
  6. Step 6: Final answer
    x = 1,385.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.