Home / 1,802.45-2,485.74-1,138.13

Finding the Fourth Proportional to 1,802.45, 2,485.74 and 1,138.13

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Solution

The fourth proportional to 1,802.45, 2,485.74 and 1,138.13 is: 1,569.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.45 : 2,485.74 = 1,138.13 : x
  2. Step 2: Convert to fraction form
    1,802.45/2,485.74 = 1,138.13/x
  3. Step 3: Cross multiply
    1,802.45x = 2,485.74 × 1,138.13
  4. Step 4: Simplify right side
    1,802.45x = 2,829,095.27
  5. Step 5: Solve for x
    x = 2,829,095.27/1,802.45
  6. Step 6: Final answer
    x = 1,569.58

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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.