Home / 1,265.40-1,746.05-705.75

Finding the Fourth Proportional to 1,265.40, 1,746.05 and 705.75

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Solution

The fourth proportional to 1,265.40, 1,746.05 and 705.75 is: 973.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.40 : 1,746.05 = 705.75 : x
  2. Step 2: Convert to fraction form
    1,265.40/1,746.05 = 705.75/x
  3. Step 3: Cross multiply
    1,265.40x = 1,746.05 × 705.75
  4. Step 4: Simplify right side
    1,265.40x = 1,232,271.26
  5. Step 5: Solve for x
    x = 1,232,271.26/1,265.40
  6. Step 6: Final answer
    x = 973.82

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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.