Home / 1,545.15-2,130.15-1,308.16

Finding the Fourth Proportional to 1,545.15, 2,130.15 and 1,308.16

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Solution

The fourth proportional to 1,545.15, 2,130.15 and 1,308.16 is: 1,803.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.15 : 2,130.15 = 1,308.16 : x
  2. Step 2: Convert to fraction form
    1,545.15/2,130.15 = 1,308.16/x
  3. Step 3: Cross multiply
    1,545.15x = 2,130.15 × 1,308.16
  4. Step 4: Simplify right side
    1,545.15x = 2,786,577.02
  5. Step 5: Solve for x
    x = 2,786,577.02/1,545.15
  6. Step 6: Final answer
    x = 1,803.43

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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.