Home / 1,417.04-1,955.16-919.70

Finding the Fourth Proportional to 1,417.04, 1,955.16 and 919.70

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Solution

The fourth proportional to 1,417.04, 1,955.16 and 919.70 is: 1,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.04 : 1,955.16 = 919.70 : x
  2. Step 2: Convert to fraction form
    1,417.04/1,955.16 = 919.70/x
  3. Step 3: Cross multiply
    1,417.04x = 1,955.16 × 919.70
  4. Step 4: Simplify right side
    1,417.04x = 1,798,150.88
  5. Step 5: Solve for x
    x = 1,798,150.88/1,417.04
  6. Step 6: Final answer
    x = 1,268.95

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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.