Home / 1,605.13-2,214.81-975.55

Finding the Fourth Proportional to 1,605.13, 2,214.81 and 975.55

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Solution

The fourth proportional to 1,605.13, 2,214.81 and 975.55 is: 1,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,605.13 : 2,214.81 = 975.55 : x
  2. Step 2: Convert to fraction form
    1,605.13/2,214.81 = 975.55/x
  3. Step 3: Cross multiply
    1,605.13x = 2,214.81 × 975.55
  4. Step 4: Simplify right side
    1,605.13x = 2,160,657.90
  5. Step 5: Solve for x
    x = 2,160,657.90/1,605.13
  6. Step 6: Final answer
    x = 1,346.10

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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.