Home / 1,545.23-2,131.74-1,047.70

Finding the Fourth Proportional to 1,545.23, 2,131.74 and 1,047.70

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Solution

The fourth proportional to 1,545.23, 2,131.74 and 1,047.70 is: 1,445.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.23 : 2,131.74 = 1,047.70 : x
  2. Step 2: Convert to fraction form
    1,545.23/2,131.74 = 1,047.70/x
  3. Step 3: Cross multiply
    1,545.23x = 2,131.74 × 1,047.70
  4. Step 4: Simplify right side
    1,545.23x = 2,233,424.00
  5. Step 5: Solve for x
    x = 2,233,424.00/1,545.23
  6. Step 6: Final answer
    x = 1,445.37

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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.