Home / 1,120.04-1,545.63-647.90

Finding the Fourth Proportional to 1,120.04, 1,545.63 and 647.90

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Solution

The fourth proportional to 1,120.04, 1,545.63 and 647.90 is: 894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120.04 : 1,545.63 = 647.90 : x
  2. Step 2: Convert to fraction form
    1,120.04/1,545.63 = 647.90/x
  3. Step 3: Cross multiply
    1,120.04x = 1,545.63 × 647.90
  4. Step 4: Simplify right side
    1,120.04x = 1,001,413.68
  5. Step 5: Solve for x
    x = 1,001,413.68/1,120.04
  6. Step 6: Final answer
    x = 894.09

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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.